One of the things that we keep hearing about here at Alien Gear is G2 Research's RIP Rounds. Customers will mention them, fans ask about them on Facebook and YouTube - and we do listen! - and so on. People wonder if they are good carry rounds and so on.
Contrary to popular belief, "RIP" does not stand for "rest in peace" or "requiescat in pacem" ("rest in peace" in Latin") but rather "Radically Invasive Projectile." These bullets have a novel design that promises to be the ultimate tactical nastiness. Hence, we get questions from people about whether or not this is the to get.
Just like a number of other bullet designs, some folks wonder if they're some sort of ultimate man-stopper. Are they? Well...we're gonna talk about that.
What are RIP Rounds?
RIP rounds (short for Radically Invasive Projectile) are a type of defensive ammunition designed by G2 Research. Unlike traditional hollow points or full metal jacket rounds, RIP rounds use a distinctive design with multiple sharp, trocar-like fragments (often called "trocars") that break off upon impact and spread outward while a central core continues forward.
The projectile is all-copper, so there's no lead to be found. (Tactical AND environmentally conscious!) Bullet weight for RIP Rounds 9mm load is 92 grains, which gives them some zip (1250 fps for their 9mm ammo) due to the light weight.
The bullet itself is a copper hollow point, with a crowned nose kind of like Winchester hollow points (Black Talon, Ranger, PDX) though obviously with much sharper points. After casting, horizontal cannelures are cut into the projectile, followed by vertical channels cut into the projectile. This leaves a thin web of copper between the vertical spires that are created by machining the projectile.
I actually spoke with the factory guys at SHOT Show. Their bullets are CNC machined for quality control, so - anything else you might think aside - their process is geared around consistency. They aren't making a novelty round for the sake of it; this is serious ammo.
The intended effect is that when the round enters a fleshy target, the spires peel back and break off into trocars. The trocars slow down rapidly, coming to rest at a relatively shallow depth while the core of the bullet keeps going. However, since copper isn't as dense as lead, it doesn't retain energy as well as a solid lead projectile and thus comes to a stop sooner.
In theory, this means that the core of the bullet gets deeper penetration, but the trocars break off and puncture vital structures like organs, veins and arteries and so on. As the philosopher RW Hubbard observed, it sounds nasty and it pretty much is.
But are they up to the hype?
RIP Rounds Are New But Use Proven Design Elements
Before we go further, it bears mentioning that RIP rounds are basically a new take on the high-velocity hollow point. The external channels and spires are new, but the basic idea - light projectile at high speed - is not the first of its kind.
Let's dive a little more into that.
So, the thing about expanding ammunition is that you're looking for a balance of factors in order to get the effect that you want from the bullet in a squishy target. This isn't new; ammunition makers have been tinkering with this stuff for a long time.
You need enough mass so that enough energy is retained by the projectile as it enters the target to inflict sufficient trauma and penetrate to sufficient depth.
However, you also need enough velocity to get the round to expand; more velocity means more hydraulic pressure as it enters tissue, but - again - you also need a certain minimum threshold of mass in this regard as well.
Too light a bullet at too fast a speed goes through soft tissue like Congress goes through the national budget. Too slow, and it just stops barely past the surface. Too heavy a bullet at too slow a speed won't expand because there isn't sufficient hydraulic pressure.
Again, this isn't new information; handgun ammunition makers have been tinkering with this stuff for a long time. What G2 Research did with their RIP rounds is to introduce a new take on an old concept.
What a few ammunition makers figured out is that you could get reliable expansion by making a bullet go a lot faster. How do you do that? Load a lighter projectile and put a bit more powder in it. Some of you might remember or have heard of Super Vel or CorBon. Those ammunition makers figured that same idea decades ago, making light-for-caliber hot loads that would reliably penetrate and expand.
Super Vel started making ammunition in the mid-60s, with their loads being popular with law enforcement. Unfortunately, tax problems forced the company into shutting their doors in the mid 70s, but companies like CorBon and others followed soon after.
They followed the same basic formula, making light-for-caliber +P loads that would penetrate deep and reliably expand.
This is why the 115-grain +P and +P+ loads were the standard for 9mm rounds for so long, despite conventional wisdom favoring heavy-for-caliber (eg 147-grain) loadings instead. They worked more reliably!
Thus, G2 RIP rounds are a variation on a theme, just with external cuts and spires rather than the internal relief cuts commonly found on CorBon and Super Vel ammunition.
Make bullet lighter, it go faster. Cut it, it expands more easily. Makes sense!
What are the drawbacks of RIP bullets?
RIP bullets may look innovative, but they come with several notable drawbacks that limit their real-world defensive effectiveness:
1. Inconsistent Penetration
RIP rounds often under-penetrate in ballistic gel testing. The FBI recommends 12–18 inches of penetration for defensive handgun rounds; RIP bullets frequently fall short of that range, especially after encountering barriers like clothing or bone.
Independent gel tests (such as those by Lucky Gunner, The Wound Channel, and Paul Harrell) have shown that RIP rounds often fail to reach the FBI-recommended 12–18 inches of penetration in ballistic gelatin.
This shortfall becomes more pronounced through denim or intermediate barriers — which is a serious issue for defensive reliability.
2. Fragmentation Reduces Energy Transfer
The trocars (fragmenting blades) separate quickly upon impact, dispersing energy across multiple small wound channels.
While this looks dramatic, it can reduce the depth and force delivered to vital organs, which may be less effective in stopping a threat compared to bonded hollow points that expand and retain weight.
3. Over-Hyped Marketing vs. Real-World Data
RIP ammo is marketed heavily on visual damage and fear factor, but lacks the field-proven track record of rounds like Federal HST or Speer Gold Dot. Most law enforcement agencies and professionals avoid it for that reason.
4. Expensive and Hard to Find
RIP rounds are often pricier than premium defensive hollow points, without offering better performance. Their limited availability also makes consistent training difficult.
What are the different Types of RIP bullets?
Radically Invasive Projectiles are a line of specialty self-defense ammunition designed by G2 Research. While they all share a common theme — fragmenting, sharp trocars that spread out upon impact — there are a few distinct types that vary by caliber and design intent.
Here are the main types of RIP bullets:
1. G2 Research RIP (Standard)
- Calibers: 9mm, .380 ACP, .40 S&W, .45 ACP
- Design: Solid copper projectile with 8 trocar points that fragment on impact.
- Purpose: Self-defense for civilian handgun users.
- Performance: Shallow penetration with wide initial trauma, often underperforms in barrier penetration.
2. RIP Outlaw
- Caliber: .45 ACP
- Design: Same concept as the standard RIP, but optimized for maximum expansion in lower-velocity rounds.
- Differences: Tailored for .45 ACP’s slower speed to ensure consistent fragmentation.
3. Civic Duty
- Calibers: 9mm
- Design: Instead of trocars that break off, this bullet expands into sharp petals — retaining more weight.
- Purpose: Offers a hybrid of fragmentation and expansion, meant to penetrate slightly deeper than standard RIP.
- Note: Still shallow compared to conventional hollow points.
4. Telos
- Calibers: 9mm, .357 Magnum, .45 ACP, 10mm
- Design: Solid copper hollow point with fragmenting petals, marketed as an evolution of the RIP.
- Goal: Improved balance between expansion, penetration, and barrier performance.
- Effectiveness: Mixed results; still fails to consistently meet FBI standards.
5. RIP Rifle Variants (Limited)
- Calibers: Some rifle-specific designs (e.g. .223/5.56) have been prototyped.
- Availability: Extremely limited; more concept than commonly sold product.
What calibers are available for RIP bullets?
G2 Research offers RIP bullets in a limited range of handgun calibers. As of now, the following calibers are available for the standard RIP lineup:
Available Calibers for G2 RIP Bullets:
- 9mm Luger
- .380 ACP
- .40 S&W
- .45 ACP
These calibers are commonly used for self-defense handguns, which aligns with the RIP’s intended purpose as a close-range defensive round designed to fragment upon impact.
Note: Other G2 Research product lines like Telos and Civic Duty may include additional calibers such as 10mm Auto and .357 Magnum, but the original RIP line is focused on the four calibers above.
Always check manufacturer specifications or official listings for current availability, as product lines and offerings can evolve.
RIP Rounds vs Hollow Point
What’s the difference between RIP rounds and hollow points? Hollow points are conventional self-defense bullets that expand on impact to create a larger wound channel and reduce overpenetration. RIP rounds, by contrast, are designed to fragment into multiple sharp "trocars" upon impact, causing rapid energy transfer and multiple wound paths.
| Feature | RIP Rounds | Hollow Points |
|---|---|---|
| Design | CNC-machined with sharp fragmenting tips | Lead or bonded core with a hollow cavity |
| Performance Goal | Fragment on impact to create multiple channels | Expand to increase diameter and stop in target |
| Penetration | Shallow with multiple short channels | Deeper with one large cavity |
| Overpenetration Risk | Low | Moderate to low (depending on design) |
| Availability | Limited calibers, high cost | Widely available in many calibers |
| Reputation | Controversial, marketed heavily | Proven and widely adopted by law enforcement |
So Basically, It's Like A Fragmenting Round
In the broad strokes, RIP rounds are more or less fragmenting or frangible rounds. The hydraulic pressure causes the trocars to break off and the solid core keeps going.
Additionally, since they are solid copper, that means they are monolithic in that they're made of a single material. Mono rounds, as it happens, tend to be long on penetration and short on expansion or the opposite. Jacketed hollow points, on the other hand, tend to strike something of a happy medium.
Most fragmenting rounds tend to penetrate to shallower depths. Not that they don't reach depths in testing that would satisfy the FBI protocol - as you can see in the Lucky Gunner Labs tests - but on the shallow side.
Should that concern you? Is a little less penetration better than a little more?
Actually...it is something you should think about. Here's the thing about gel testing:
Ballistic gelatin isn't the same consistency as human tissue. If anything, it's actually a little firmer than flesh. Ballistic gel is actually the same consistency as the average density of all human tissues, including bone, skin, muscle and so on.
What's been noticed by various agencies is that gel is a good predictor of performance in live tissue, it's not exactly a 1-to-1 ratio of what a bullet does in gel to what it does in tissue. It's more like 3 to 2. In other words, if a bullet penetrates 18 inches in gel, it'll be more like 12 inches in tissue.
Additionally, what the FBI and other agencies have often said is that erring on the side of MORE penetration is better. If nothing else, it punches into the target and does damage.
Does this mean that RIP rounds, fragmenting or frangible rounds won't work in the moment of truth? They probably will. It's just that traditional jacketed hollow points have been designed to work (and have worked) to the parameters that experts have determined most commonly translate to reliable stoppages in the real world.
Should I Carry RIP Rounds?
Alright, now to the nitty-gritty...should you carry RIP rounds? Are they the tactical awesomeness in the rounds that most people carry?
The truth is that you should if you think they're best for you. If your gun feeds them reliably, and shoots them accurately, they will do what they're advertised to do. They've only been on the market a couple of years by this point, so there isn't a track record of performance in real-world use to draw on.
What has testing shown, though?
RIP Rounds in most tests don't penetrate as deeply as traditional JHP. They get close, but not quite as deep. The trocars break off as claimed. In other words, it basically does what they say it does.
A bit less penetration is actually okay; civilian-involved shootings basically occur within spitting distance, so you may not necessarily need to worry as much about shooting through barriers.
Again, there isn't a history of case studies and field reports to draw on. What do we know about ammunition performance in real-world shootings that indicates whether or not it would be a suitable ammunition?
We know this ammunition slows to a stop in gel tests and even in meat targets. Thus, they are viable in that regard.
As to the novelty of the trocars into vital structures...this is where on-paper and real-world collide. Would it probably happen? Yes, but the thing is that you can't predict nor assure where the trocars go. Therefore, it's more that "they might." Let's say for the moment they do...will it work?
I'm no expert by any means; the guy writing this stuff knows about as much as everyone else does. Everything I've learned about terminal performance and so on is publicly available and discoverable if you want to reach your own conclusions. Based on everything I've learned about terminal performance in real-world defensive shootings, my guess is that they are no better than traditional hollow points, if anything.
You see, shooting a bad guy is an act of persuading them to stop their violent, threatening behavior. Decades of reports and information from police and civilian-involved shootings indicates that they are generally persuaded to do so when one of three things happens.
First is the sheer shock of being shot. Second is trauma to the musculoskeletal system such that ambulatory function is seriously compromised. Thirdly is trauma to the central nervous system, which is normally fatal.
What does it most of the time? Psychological shock. The majority of people shot by a handgun survive and by an overwhelming margin.
You'll notice that blood loss is not mentioned. Plenty of officer-involved shootings have documented people that were hit directly in the cardiovascular system and kept fighting, so it isn't the reliable stopper you'd think.
So...are RIP rounds good carry ammunition? What evidence there is indicates they will work as intended, and they are capable of making a stop. Are they better than any other brand, box or design of defensive ammunition? I don't know about that.
FAQs
Are RIP bullets illegal?
RIP bullets are legal in most U.S. states. However, some states and local jurisdictions restrict certain types of ammunition, so it’s important to check local laws before purchasing or carrying them.
What is the purpose of a RIP bullet?
The purpose of a RIP bullet is to fragment on impact, creating multiple wound channels. This design is intended to maximize internal damage and reduce the risk of overpenetration.
Are RIP rounds better than hollow points?
Hollow points are generally considered more reliable and consistent for self-defense. RIP rounds offer an aggressive fragmentation pattern, but lack the proven track record of traditional hollow point ammunition.
Who manufactures RIP bullets?
G2 Research is the manufacturer of RIP bullets. The company introduced the Radically Invasive Projectile in 2014 as a high-performance self-defense round.
Are RIP bullets armor piercing?
RIP bullets are not classified as armor-piercing. They are made from copper and designed to fragment rather than penetrate armor.
Do RIP bullets expand like hollow points?
No, RIP bullets do not expand like hollow points. Instead, they break apart into multiple sharp fragments to create separate wound paths.
What calibers are RIP rounds available in?
RIP rounds are produced in several popular calibers, including 9mm, .380 ACP, .45 ACP, and .40 S&W. Availability can vary by retailer and state.
Are RIP bullets good for self-defense?
RIP bullets are marketed for self-defense, but many experts and professionals prefer hollow points due to their consistent expansion and deeper penetration.
What are the drawbacks of RIP bullets?
The main drawbacks of RIP bullets include shallow penetration, limited real-world testing, higher cost, and less consistent performance compared to traditional hollow points.
Can RIP rounds be used in law enforcement?
While legally permitted in many jurisdictions, RIP rounds are rarely used by law enforcement due to concerns over fragmentation control, penetration, and liability.