Rock River Arms A4 AR-15 Mid-Length 6.8 SPC 16″ 25RD

The Rock River Arms A4 AR-15 Mid-Length is a semi-automatic rifle chambered in 6.8 SPC II, combining the familiar AR-15 platform with a cartridge designed for enhanced downrange performance compared with 5.56 NATO. Its 16″ chrome molybdenum barrel, mid-length gas system, and 1:10 twist provide a versatile configuration for a variety of shooting applications.

The rifle features a forged flat-top A4 upper receiver, forged LAR-15M lower receiver, receiver-height gas block, and mid-length handguard. A six-position tactical CAR stock, A2 pistol grip, RRA 2-stage trigger, threaded muzzle, and optic-ready design round out the platform.

Benefits

• 6.8 SPC II Chambering: Provides a capable alternative to the traditional 5.56 NATO AR-15 chambering.
• Versatile Mid-Length Configuration: The mid-length gas system and 16″ barrel create a practical balance of size and performance.
• Optic-Ready Platform: The flat-top upper receiver and Picatinny-equipped gas block provide flexible mounting options for compatible accessories.

Features

• 16″ Chrome Molybdenum Barrel: The 1:10 twist barrel is designed to support a broad range of factory 6.8 SPC II loads.
• Threaded Muzzle: The 5/8×24 threaded barrel comes equipped with an A2 flash hider.
• Forged A4 Upper Receiver: The flat-top upper provides a familiar AR-style layout with room for compatible optics.
• RRA 2-Stage Trigger: The two-stage trigger provides a distinct two-step trigger pull within the rifle’s fire-control system.

Additional highlights include a forged LAR-15M lower receiver, mid-length handguard, receiver-height gas block, six-position tactical CAR stock, A2 pistol grip, manual safety, standard sights, and 25+1 capacity.

Rock River Arms A4 AR-15 Mid-Length Specifications

Manufacturer: Rock River Arms
Model: A4 AR-15 Mid-Length
Caliber: 6.8 SPC II
Action: Semi-Automatic
Capacity: 25+1
Barrel Length: 16″
Barrel Material: Chrome Molybdenum
Barrel Twist: 1:10
Muzzle Thread: 5/8×24
Threaded Barrel: Yes
Muzzle Device: A2 Flash Hider
Gas System: Mid-Length
Upper Receiver: Forged Flat-Top A4
Lower Receiver: Forged LAR-15M
Gas Block: Receiver Height
Handguard: Mid-Length
Stock: Six-Position Tactical CAR
Grip: A2 Pistol Grip
Trigger: RRA 2-Stage
Finish: Black
Sights: Standard Sights
Optic Ready: Yes
Manual Safety: Yes
Ambidextrous Safety: No
Grip Safety: No
Trigger Safety: No
Overall Length: 36″
Weight: 7.1 lbs.