Rock River Arms BLK2142 LAR-15M RRAGE 300 AAC Blackout 30+1 10.50" Black Threaded Barrel, M-LOK Handguard, Black Aluminum Picatinny Rail Receiver, Black Polymer SB Tactical SBA3 Brace, Black A2 Grip

The Rock River Arms BLK2142 LAR-15M RRAGE chambered in .300 AAC Blackout is a compact, modular firearm optimized for shooters who demand a short-barreled platform without sacrificing ballistic integrity or ergonomic control. The 10.50-inch threaded barrel delivers effective velocity performance in the subsonic and supersonic envelope while maintaining a compact overall profile suited to confined spaces, vehicle operations, and close-quarters training scenarios. The M-LOK compatible handguard provides modern accessory mounting flexibility without unnecessary weight, and the aluminum Picatinny rail receiver ensures zero shift and consistent optic performance downrange.

The 30+1 capacity (.300 Blackout magazines) balances tactical reload frequency with manageable magazine profile. Rock River Arms' single-stage trigger design reduces trigger travel and enables precision shot placement during dynamic drills. The SB Tactical SBA3 brace provides consistent cheek weld and recoil absorption comparable to fixed stocks on larger platforms, while the low-profile gas block minimizes sight-line interference. The free-floating 7.25-inch M-LOK handguard reduces harmonic vibration, improving consistency shot-to-shot. The A2 grip offers ergonomic finger purchase and familiar controls for users transitioning from standard rifle platforms. Included magazine, manual, and warranty documentation support long-term ownership and compliance.

.300 Blackout is purpose-built for suppressed and subsonic applications, making this platform ideal for operators prioritizing hearing preservation and ballistic signature reduction during training and field operations. The short barrel length reduces muzzle velocity sensitivity, allowing shooters to run both supersonic duty rounds and subsonic loadings from the same magazine without performance degradation. The threaded barrel accommodates standard muzzle brakes or suppressors, expanding operational flexibility. This configuration appeals to precision shooters, home-defense operators, and training specialists who require a compact, modular platform with proven accuracy and reliability.

The .300 Blackout round has become a standard in professional and civilian tactical circles due to its subsonic capability, accuracy, and terminal performance in shorter barrel lengths. Rock River Arms' manufacturing reputation supports consistent chamber dimensions and bolt performance, critical for suppressor-ready platforms where back-pressure and cycling reliability depend on tight tolerances. The total weight of 15.56 lbs provides stable shooting characteristics without introducing fatigue during extended range sessions or operational training.