The Glock 43X represents Glock's purpose-built answer to concealed carry demands, combining a compact 3.41" barrel with a full-size grip that houses 10 rounds of 9mm in a slimline package measuring just 1.10" wide.
Whether you're running a standard 43X or the optics-ready MOS variant, the right accessories transform this subcompact into a fully optimized carry system for everyday defense, backup roles, or deep concealment scenarios where every millimeter matters.
This guide covers holsters, magazine solutions, optics mounting, lights, grips, triggers, and essential support gear that maximize the Glock 43X's capabilities across AIWB carry, off-duty applications, and defensive training.
Holsters for Glock 43X
Proper holster selection for the 43X requires accounting for the pistol's 6.5" overall length, slim 1.10" profile, and whether you've added weapon lights or micro red dots to MOS models.
Quality Glock 43X holsters provide secure trigger coverage, positive retention through friction or active mechanisms, and accommodate both standard configurations and modernized setups with TLR-6 lights or Shield RMSc-footprint optics.
The 43X's dimensions favor appendix carry and IWB positions where its reduced width excels compared to double-stack competitors.
IWB Holsters
Inside-the-waistband carry represents the primary deployment method for the 43X, taking full advantage of the pistol's slim profile for deep concealment under light clothing. The 43X's 18.7-ounce unloaded weight makes all-day carry manageable with proper belt support, while its reduced width minimizes printing concerns that plague thicker double-stack models.
Belt Holsters
Outside-the-waistband holsters suit range training, home defense, and situations where concealment takes secondary priority to accessibility and comfort. OWB configurations distribute the 43X's weight across belt surfaces rather than against the body, reducing fatigue during extended wear while maintaining faster draw speeds compared to IWB positions.
OWB Paddle Holsters
Paddle holsters eliminate belt threading via wide paddle inserts that slide inside the waistband, making them ideal for range sessions, training courses, or situations requiring frequent holster removal. The paddle distributes the 43X's weight across a larger waistband area than standard belt clips, though retention security may decrease compared to traditional belt holsters during vigorous movement or defensive training drills.
Hook & Loop Holsters
Hook-and-loop mounting systems provide quick attachment to plate carriers, vehicle interiors, or non-traditional surfaces, suiting tactical applications where conventional belt mounting proves impractical. These holsters work across 43X variants but require secure mounting surfaces and regular inspection to prevent loosening through vibration or movement.
Drop Leg Holsters
Thigh-mounted drop-leg rigs position the 43X lower on the body, clearing bulky tactical gear while maintaining accessibility during outdoor or duty applications. Adjustable leg straps distribute weight across the thigh, though proper adjustment remains critical to prevent holster migration during movement.
Chest Holsters
Chest rigs keep the 43X accessible during ATV riding, hiking, or hunting where belt carry would interfere with backpack hip belts or seated positions. Quality chest holsters use padded, adjustable harness systems to distribute weight across shoulders and prevent bouncing through rough terrain. These configurations particularly suit outdoor enthusiasts and hunters who need firearm access while wearing heavy backpacks or waders.
Lights for Glock 43X
Weapon-mounted lights enable positive target identification in low-light defensive scenarios, addressing the reality that most home invasions occur during darkness when threats cannot be reliably identified with ambient lighting alone.
The 43X's slim profile limits light options compared to full-size Glocks, with the Streamlight TLR-6 representing the dominant choice for rail-equipped models. Non-rail 43X variants lack integral mounting solutions, pushing users toward rail-equipped versions or external light sources for low-light capability.
Streamlight TLR-6
The TLR-6 mounts to the 43X's accessory rail via a replaceable frame attachment system, providing 100 lumens of output and optional red laser capability.
This compact light measures just 2.27 ounces, adding minimal bulk while dramatically improving low-light defensive capability. The TLR-6's integrated laser provides backup aiming for unconventional shooting positions where sight alignment proves difficult, though effective range remains limited to close defensive distances under 15 yards.
Light-Bearing Holster Requirements
Adding the TLR-6 changes the 43X's dimensions, requiring light-specific holsters that accommodate both firearm and light profiles.
Many manufacturers produce 43X-with-TLR-6 specific holsters, ensuring proper retention and trigger coverage with the light installed. Alien Gear Holsters offers multiple configurations specifically molded for 43X/TLR-6 combinations across IWB, OWB, and appendix carry positions.
Alternative Light Solutions
Handheld lights represent the primary alternative for 43X models without integral rails or users preferring weapon-independent illumination.
Quality tactical lights provide 300-1000+ lumens with momentary activation switches that enable target identification without flagging with the muzzle. The two-light doctrine—combining weapon-mounted and handheld lights—provides maximum flexibility across defensive scenarios.
Optics for Glock 43X
The 43X MOS variant features Glock's Modular Optic System with an RMSc footprint cut that accepts Shield RMSc, Holosun 507K, and similar micro red dots without slide milling.
Micro dots dramatically improve target acquisition speed and precision, particularly under stress or in low light where iron sight alignment becomes challenging. Standard non-MOS 43X models require slide milling services from Primary Machine, ATEi, or similar shops to accommodate micro dots.
Shield RMSc
The Shield RMSc represents the direct-fit option for 43X MOS models, featuring a 4 MOA dot and flush-mount profile that maintains the pistol's slim profile.
Its compact dimensions add minimal bulk while providing electronic sight capability suited to defensive distances from contact to 25 yards. Battery life ranges around 2 years of continuous use with automatic brightness adjustment preserving power.
Holosun 507K
The Holosun 507K brings multiple reticle options to the 43X MOS platform, offering 2 MOA dot, 32 MOA circle, or combined dot-circle configurations selectable via side buttons.
Solar backup panels preserve function even with dead batteries under bright ambient light, providing redundancy for defensive applications.
The 507K's Shake Awake feature conserves battery by powering down during periods of inactivity, then instantly reactivating when movement is detected.
Trijicon RMRcc
The Trijicon RMRcc delivers bombproof durability in a compact package sized specifically for slimline pistols like the 43X. Its forged aluminum housing withstands impacts that destroy budget optics, while a 3.25 MOA dot balances precision and target acquisition speed.
Battery replacement requires removing the optic, making periodic battery changes essential maintenance rather than field-serviceable operations.
Backup Iron Sights
Micro dot installations on 43X MOS models should preserve backup iron sight capability through suppressor-height front sights that cowitness with the dot. This configuration allows iron sight use if optics fail while maintaining dot visibility in the upper sight picture. Many shooters run dots without backup irons to maximize sight picture, though defensive users typically prioritize iron sight retention for redundancy.
Magazines and Extensions for Glock 43X
The 43X ships with two 10-round factory magazines that maximize capacity within the slimline frame's 1.10" width, though aftermarket solutions dramatically increase capacity without compromising concealability.
Shield Arms S15 magazines represent the dominant aftermarket option, providing 15 rounds of 9mm in a flush-fit package that transforms the 43X into a high-capacity concealed carry platform. Magazine extensions and upgraded springs address capacity, reliability, and loading ergonomics across defensive and training applications.
Factory Glock Magazines
Glock factory 10-round magazines establish the reliability baseline, using proven polymer construction and double-stack-to-single-feed geometry that ensures consistent function across ammunition types.
These magazines work in both 43X and G48 pistols, providing interchangeability across the slimline family. Factory magazines represent the conservative choice for defensive applications where proven reliability outweighs capacity considerations.
Shield Arms S15 Magazines
The S15 15-round magazine achieves capacity previously impossible in slimline frames through a proprietary double-stack design using steel construction.
These magazines fit flush with the 43X grip without extending beyond the frame, providing a 50% capacity increase over factory magazines without sacrificing concealability. S15 magazines require the matching Shield Arms magazine catch for optimal function and proper lockback engagement.
Magazine Extensions
Extension base pads from manufacturers like Pearce, Hyve, and Strike Industries add 1-3 rounds beyond factory capacity while improving reload indexing through enlarged base pads.
These extensions increase grip surface area, benefiting shooters with larger hands who find the flush-fit magazines too short for proper purchase. Training and competition applications benefit from extended magazines that provide increased capacity without defensive concealment concerns.
Magazine Loaders
Loading 10-15 round slimline magazines strains thumbs during high-volume range sessions, making magazine loaders essential accessories.
The Maglula UpLULA universal loader works across 9mm magazines including 43X variants, reducing loading effort by 80% compared to manual thumb loading. These tools prove invaluable during training courses or practice sessions where hundreds of rounds require efficient magazine preparation.
Grips for Glock 43X
Factory 43X grips provide adequate texture, but aftermarket solutions address recoil management, trigger reach, and extended shooting comfort through varied materials and textures.
Talon Grips offers adhesive panels that increase grip surface traction without permanent modification, while Hogue rubber sleeves provide recoil absorption and finger grooves that improve control during rapid fire.
Stippling services create permanent texture modifications tailored to individual hand dimensions and carry preferences.
Talon Grips
Talon adhesive grip panels attach directly to 43X frames via 3M adhesive backing, providing granulate or rubber texture options that dramatically improve traction compared to factory Gen5 surfaces.
Granulate texture mimics skateboard tape with aggressive surface grip, while rubber variants offer softer touch with excellent moisture resistance. These grips install in minutes and remove cleanly if users prefer returning to factory configuration.
Hogue HandALL Grip Sleeves
Hogue rubber grip sleeves slip over the 43X frame, adding recoil-absorbing material and finger grooves that improve control during defensive drills or training.
The rubber construction compresses slightly during firing, reducing perceived recoil compared to hard polymer surfaces. These sleeves add minimal bulk while providing all-weather grip security, though concealment may suffer slightly from increased dimensions.
Custom Stippling
Professional stippling services create permanent texture modifications using soldering tools or laser engraving to alter frame surface patterns.
Custom stippling allows precise texture placement that matches individual hand dimensions, creating aggressive traction where hands naturally grip while leaving other areas smooth for comfortable carry.
Quality stippling work maintains structural integrity without compromising frame strength or appearance beyond texture modification.
Triggers for Glock 43X
The 43X ships with Glock's Gen5 trigger that provides a consistent 5.5-pound pull weight suitable for defensive applications, though aftermarket triggers reduce pull weights and improve reset characteristics for competition or training applications.
Apex, Overwatch Precision, and Timney produce drop-in trigger assemblies that maintain safety while enhancing feel and reducing pull weights to 3.5-4.5 pounds. All trigger modifications require careful consideration of defensive liability and safety implications before installation.
Apex Tactical Triggers
Apex Tactical's Action Enhancement Trigger provides a flat-faced design with reduced pull weight around 4.5 pounds and shortened reset compared to factory triggers.
The flat face promotes consistent finger placement that reduces pull weight variation, while machined aluminum construction eliminates flex present in polymer triggers. Apex triggers maintain all factory safety mechanisms, ensuring drop safety and preventing uncommanded discharges during normal handling.
Overwatch Precision TAC Trigger
The Overwatch TAC trigger reduces pull weight to approximately 4 pounds while maintaining crisp break and short reset characteristics that improve split times during defensive drills.
Its curved face matches factory ergonomics while eliminating the trigger dingus safety for shooters preferring simplified trigger shoe geometry. The TAC trigger suits defensive applications where moderate pull weight reduction enhances accuracy without creating liability concerns.
Connector and Spring Upgrades
Minus connector installations and reduced-power trigger springs lower pull weights without complete trigger assembly replacement.
A 4.5-pound connector paired with reduced trigger spring creates a 3.5-4-pound pull suitable for competition or range use, though defensive applications should maintain heavier configurations. Ghost Inc. and Lone Wolf produce quality connectors and springs that provide reliable function after proper installation and testing.
Sights for Glock 43X
Factory 43X sights include polymer U-notch rears and fixed fronts that provide adequate target acquisition for general use, but aftermarket sight upgrades dramatically improve low-light performance and precision.
Tritium night sights from Trijicon, AmeriGlo, and XS Sights provide self-luminous aiming points in complete darkness, while fiber-optic fronts gather ambient light for faster target acquisition during daylight shooting. Proper sight selection balances defensive requirements, shooting conditions, and personal preferences regarding sight picture and alignment speed.
Trijicon HD Night Sights
Trijicon HD sights combine tritium rear lamps with a large tritium/fiber-optic front sight that remains visible across all lighting conditions.
The oversized front sight draws the eye naturally during rapid target acquisition, while a bright orange or yellow ring surrounding the tritium vial enhances daylight visibility. These sights excel in defensive applications where split-second target acquisition determines outcomes.
AmeriGlo Night Sights
AmeriGlo offers numerous night sight configurations including the popular Agent series with blacked-out rears and bright front tritium, creating a front-sight-focused sight picture preferred by many defensive shooters.
The Pro-Operator series provides tritium in all three positions for complete low-light visibility, suitable for users preferring traditional three-dot sight pictures. AmeriGlo's extensive catalog allows precise sight picture customization matching shooting style and preferences.
Fiber-Optic Sights
Fiber-optic front sights from TruGlo and Dawson Precision gather ambient light into brilliant aiming points that drastically accelerate sight acquisition under daylight conditions.
These sights particularly suit competition and range applications where lighting remains controlled, though fiber rods can break through impacts. Many defensive users combine fiber-optic fronts with blacked-out rears, creating high-contrast sight pictures that emphasize front sight focus.
Barrels for Glock 43X
Aftermarket barrels from True Precision, Lone Wolf, and Agency Arms provide threaded muzzles for suppressor attachment, improved precision through tighter chamber tolerances, and alternative finishes that enhance corrosion resistance or aesthetics.
Match-grade barrels may improve inherent accuracy by 10-15% at extended ranges beyond 25 yards, though the 43X's 3.41" barrel length limits absolute precision compared to full-size platforms.
Threaded barrels enable suppressor use that reduces noise signature and felt recoil, though barrel length increases by 0.5-0.6" through threading.
True Precision Barrels
True Precision produces drop-in replacement barrels with standard or threaded configurations, using 416R stainless steel construction and match-grade tolerances.
These barrels feature conventional rifling that handles lead and jacketed ammunition without the Glock polygonal restrictions on lead bullets. Coatings include black nitride for corrosion resistance or stainless finishes that complement factory aesthetics.
Threaded Barrel Considerations
Threaded 43X barrels extend overall length by approximately 0.5", requiring slightly longer holsters or open-ended holster designs that accommodate the exposed threads.
Thread protectors prevent damage during carry when suppressors aren't attached, though these add minor bulk. Users should verify local laws regarding threaded barrels, as some jurisdictions restrict or prohibit threaded pistol barrels regardless of suppressor ownership.
Match-Grade Precision
Match-grade barrels from premium manufacturers may tighten groups by 10-20% compared to factory barrels at 25 yards, though the 43X's carry-oriented design and short sight radius limit practical precision improvements for defensive applications.
Competition shooters and precision enthusiasts benefit from match barrels during scored events where every tenth-inch matters, while defensive users see minimal practical benefit from precision upgrades.
Slides for Glock 43X
Aftermarket slides from Agency Arms, ZEV Technologies, and Brownells provide custom serrations, lightening cuts, optics cuts for non-MOS models, and aesthetic customization that distinguishes custom builds from factory configurations.
Slide modifications primarily address appearance and weight reduction rather than functional improvements, though custom optics cuts allow standard 43X models to mount micro dots without the MOS system.
Quality aftermarket slides maintain Glock reliability through proper materials and manufacturing tolerances.
Optics-Cut Slides
Aftermarket slides with integral optics cuts allow standard 43X models to mount micro red dots without purchasing MOS variants or sending slides for milling.
These slides typically include RMR or RMSc footprint cuts that accept popular micro dots, plus suppressor-height sight dovetails for backup iron integration. Slide replacement requires stripping the original slide and transferring all internal components to the new slide.
Slide Serrations and Cuts
Custom front and rear serrations improve slide manipulation during press checks or malfunction clearances, while window cuts reduce reciprocating mass that affects cycling and felt recoil.
Aggressive serrations benefit users wearing gloves or operating in wet conditions where smooth factory serrations provide inadequate purchase. Aesthetic preferences drive many slide customizations, though functional benefits remain minimal for most users.
Finish Options
Aftermarket slides offer coatings including Cerakote, DLC, nitride, and PVD that provide corrosion resistance superior to factory nDLC finishes while enabling color customization.
These finishes maintain durability through thousands of cycles while protecting against moisture, chemicals, and environmental exposure. Custom finishes allow unique appearances that distinguish personal firearms from factory configurations.
Maintenance Tools and Cleaning Supplies for Glock 43X
The 3.41" barrel generates fouling that accumulates in the chamber, feed ramp, and bore, requiring regular cleaning to maintain reliability and accuracy.
Glock-specific maintenance tools include proper-length cleaning rods that avoid crown damage, chamber brushes sized for 9mm chambers, and appropriate solvents for carbon removal without damaging factory finishes.
High-volume shooters benefit from ultrasonic cleaners that remove fouling from hard-to-reach areas including trigger assemblies and magazine wells.
Essential Cleaning Tools
Quality cleaning kits include bronze or nylon bore brushes sized for 9mm, chamber brushes that reach fully into chambers removing stuck cases and carbon rings, and proper-length cleaning rods that won't damage barrel crowns.
The 43X's short barrel requires careful rod selection to prevent over-insertion that damages the crown, affecting accuracy and potentially voiding factory warranties.
Lubrication Requirements
Glock reliability demands proper lubrication at slide rails, barrel hood, and disconnector interfaces using quality gun oils from manufacturers like Slip 2000, Break-Free, or Mobile 1. The 43X's tight slide-to-frame fit requires light oil application rather than heavy greases that can attract debris or impede function in cold conditions.
Proper lubrication reduces friction and wear while preventing corrosion during storage or carry through humid environments.
Maintenance Schedule
Defensive 43X pistols require cleaning every 500-1000 rounds or annually if carried but not fired, while training guns demand cleaning after every range session to maintain peak performance.
High round counts accelerate wear on recoil spring assemblies, magazine springs, and firing pin springs that require periodic replacement to maintain reliability. Factory springs typically last 3000-5000 rounds before replacement becomes advisable.
Conclusion: Best Glock 43X Accessories and Upgrades
Outfitting your Glock 43X with appropriate accessories maximizes its potential as a defensive carry pistol, backup gun, or training platform.
Quality holsters ensure secure retention and consistent accessibility across carry positions from appendix to ankle backup. Shield Arms S15 magazines transform capacity from adequate to exceptional without sacrificing the slimline profile that defines the platform.
Micro red dots on MOS models dramatically improve target acquisition speed and precision under stress. Weapon-mounted lights enable positive target identification during low-light defensive encounters. Aftermarket grips, triggers, and sights address personal preferences and shooting styles while maintaining the reliability that defines Glock pistols.
Whether you're running a standard 43X for deep concealment, an MOS model with red dot for precision defensive applications, or a light-bearing configuration for home defense, these accessories transform the platform from a capable factory pistol into a fully optimized system matched to your specific defensive requirements and carry conditions