Rock River Arms A1 Carbine SBR
Rock River Arms · Carbine · In Production · 2026
Also known as: RRA A1 Carbine SBR, LAR-15M A1 Carbine SBR
Overview
The Rock River Arms A1 Carbine SBR is a 5.56 NATO short-barreled rifle introduced in 2026 that recreates the classic Vietnam-era A1 carbine aesthetic on Rock River's modern LAR-15M lower. It pairs a 10.5-inch chrome-moly barrel and carbine-length gas system with a forged carry-handle upper, an F-marked front sight base, and a short A1-style triangular handguard, capped with a 1/2x28 threaded muzzle and an A1 flash hider.
Specifications
| Weight (empty) | 2476 g (87.3 oz) |
| Overall Length | 746 mm (29.37") |
| Barrel Length | 267 mm (10.51") |
| Action Type | Gas Operated |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Single Stage |
| Magazine Capacity | 30 rounds |
| Magazine Type | Detachable Box |
| Effective Range | 300 m (328 yd) |
| Barrel Rifling | Right Hand |
| Frame Material | Aluminum |
| Barrel Material | Steel |
| Stock Material | Polymer |
| Finish | Anodized |
Calibers
- 5.56x45mm NATO · primary · 5.56x45mm NATO — also known as 5.56mm NATO, 5.56x45mm, .223 Remington
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Manual Safety
- Features: Carbine Length Gas System, A1 Flash Hider, F Marked Front Sight Base, Forged Carry Handle Upper, A1 Triangular Handguard, Threaded Barrel, Lar 15m Lower Receiver, Retro Furniture
Production
Production years: 2026-present
Origin
Country of origin: United States
Notes
Released to coincide with the elimination of the federal SBR transfer tax. Offered with either a short fixed entry stock or an adjustable carbine-style telescoping stock; extended overall length 29 3/8 in, collapsed 26 1/8 in with the M4 stock. MSRP $1,135-$1,150.
Background
Rock River timed the retro A1 Carbine SBR's launch to the moment the $200 federal short-barreled-rifle tax stamp went to zero, letting buyers own a faithful Vietnam-era-style carbine with no tax-stamp paperwork hurdle.