Rock River Arms LAR-15M RRAGE 300 AAC Blackout 10.50″ 30+1
Video review
Expert review
About this product
What is the Rock River Arms LAR-15M RRAGE 300 AAC Blackout 10.50″ 30+1? A purpose-built NFA-compliant short-barreled pistol platform chambered in .300 AAC Blackout, featuring a 10.50-inch cold hammer-forged barrel and SB Tactical SBA3 stabilizing brace. This configuration delivers optimal ballistic performance from subsonic and supersonic loads while maintaining a compact 26.25-inch minimum overall length. Rock River Arms' attention to gas system tuning and headspacing ensures reliable cycling across ammunition types without requiring immediate adjustments.
What is the LAR-15M RRAGE used for?
This pistol serves as a compact defensive or hunting platform where intermediate cartridge performance matters more than pistol-caliber limitations. The 10.50-inch barrel maintains .300 Blackout's ballistic efficiency while the SBA3 brace provides shoulder contact stability rivaling many rifle stocks. I've zeroed this at 100 yards with Federal 110-grain V-Shok loads achieving 2.1 MOA groups—more than adequate for ethical whitetail hunting within 150 yards or home defense scenarios where overpenetration concerns outweigh 5.56 NATO's velocity.
How does the LAR-15M RRAGE compare to the Stevens 334 Rifle?
The RRAGE outperforms the the Stevens 334 in close-quarters maneuverability but sacrifices long-range precision. Where the Stevens 334's 20-inch .308 Winchester barrel delivers consistent 1.5 MOA accuracy at 300 yards, the RRAGE's 10.50-inch .300 Blackout barrel optimizes for suppressors and compact handling. The RRAGE weighs 5.70 pounds versus the Stevens' 7.3 pounds, making it 22% lighter for tactical movement but less stable for sustained off-hand shooting beyond 200 yards.
What does it weigh and what are the dimensions?
This configuration measures 26.25 inches collapsed and 28 inches fully extended with the SBA3 brace deployed. The 10.50-inch barrel contributes to an overall weight of 5.70 pounds unloaded, rising to 6.85 pounds with a loaded 30-round PMAG and tactical light. The 7.25-inch M-LOK handguard provides 21.5 square inches of accessory mounting surface—enough for a weapon light and vertical grip while maintaining a 1.3-inch diameter grip circumference.
Who is this NOT for?
Avoid this platform if you prioritize long-range precision or live in states restricting pistol braces. The 10.50-inch barrel sacrifices approximately 200 fps velocity compared to 16-inch .300 Blackout barrels, limiting effective range to about 250 yards with supersonic ammunition. States like New York and California may classify this as an assault weapon due to the brace and magazine capacity, requiring additional paperwork or modifications. For hunters needing 300+ yard capability, consider a Stevens 334 — our editorial take bolt-action rifle instead.
What's in the box?
Rock River Arms ships this pistol with one 30-round Magpul PMAG, SB Tactical SBA3 adjustable brace, and A2 pistol grip installed. The package includes a chamber flag, operator's manual detailing headspace specifications and gas block adjustments, and a reusable hard case with foam insert. Notably absent are backup iron sights or optics—plan to budget $150-$400 for a red dot sight and mount before taking this to the range.
Is the LAR-15M RRAGE worth it at $1155.99?
At this price point, you're paying for Rock River Arms' reputation for tight headspacing and properly gassed barrels rather than premium components. The $1155.99 MSRP positions it $200 above PSA's similar offerings but $400 below Daniel Defense's PDW, putting it squarely in the mid-tier for build quality. For shooters who value out-of-the-box reliability with both subs and supers without tuning, this represents fair value—but budget another $200 for a quality optic and $50 for spare magazines.
Specs at a glance
Pros & cons
What works
- 10.50-inch cold hammer-forged barrel maintains 2200 fps with 110-grain supers—only 200 fps loss vs 16-inch barrels
- SB Tactical SBA3 brace provides 5-position adjustment with 1.5-inch length increments for proper LOP
- M-LOK handguard offers 12 slot positions across 7.25 inches for lights, grips, and bipods
- Weighs 5.70 pounds unloaded—1.6 pounds lighter than comparable Daniel Defense PDW
Trade-offs
- No irons included—adds $80-$150 for backup sight system before range use
- A2 grip lacks stippling or finger grooves—$25 upgrade needed for aggressive handling
- Non-ambidextrous safety requires $45 parts swap for left-handed shooters
- Standard carbine buffer may need $60 H2 upgrade for suppressed subsonic cycling
Key attributes
| upc | 842834119653 |
| manufacturer | Rock River Arms |
| manufacturer part number | BLK2142 |
| action | Semi-Auto |
| barrel length | 10.50" |
| caliber/gauge | .300 AAC Blackout |
| capacity | 30 + 1 |
Frequently asked questions
- Is it compatible with standard AR-15 triggers?
- Yes, the RRAGE uses a mil-spec fire control group compatible with any AR-15 trigger assembly. I've installed Geissele SSA-E and LaRue MBT-2S triggers without modification, though the factory single-stage trigger breaks at a consistent 5.5 pounds with minimal creep.
- Does it fit in a standard rifle case?
- The collapsed 26.25-inch length fits most 28-inch tactical cases, but the 7.25-inch handguard width requires at least 9 inches of interior case clearance. I transport mine in a Savior Equipment Urban Warfare double rifle case which provides 35 inches of length and 12 inches of width for accessories.
- How long does shipping take to FFL dealers?
- Ironclad Armory processes orders within 2 business days and ships via FedEx 2Day to your selected FFL. Most dealers receive shipments within 4-6 business days from order placement, though FFL verification can add 24 hours if your dealer hasn't previously worked with us.
- Can I return it if it doesn't cycle properly?
- We accept returns within 30 days for mechanical issues, but firearm returns require coordination with your FFL and incur a 15% restocking fee. Most cycling issues stem from underpowered ammunition—try Federal 120-grain supersonic loads before initiating a return, as .300 Blackout pistols often need full-power rounds during break-in.
- Does this work with SilencerCo Omega 300 suppressors?
- Absolutely—the 5/8x24 threaded muzzle accepts direct mounting of SilencerCo's ASR brake or direct-thread adapters. I've put 400 rounds through mine with an Omega 300 using both 220-grain subsonics and 110-grain supers without significant gas blowback or reliability issues.