RRA (Rock River Arms)

Description:

Rock River Arms has 3 different dedicated uppers that they offer. We don't know a ton about them to weigh in on the pros/cons, but the specs are below:

NM A4:

• Upper Receiver: Forged A4
• Barrel: 20 inch Stainless Steel HBAR, 1:16 Twist, Cryogenically Treated
• Front Sight Base: Gas Block Sight Base
• Muzzle Device: A2 Flash Hider, 1/2-28 Thread
• Handguard: Free Float, High Temp Thermo Mold with NM Barrel Sleeve
• Includes: Bolt Carrier Group, Charging Handle Assembly and One 10 Round Magazine

CMP Trainer:

• Upper Receiver: Forged A4
• Barrel: 20 inch Stainless Steel HBAR, 1:16 Twist, Cryogenically Treated
• Muzzle Device: A2 Flash Hider, 1/2-28 Thread
• Handguard: RRA NM CMP TRO Free Float Rail, Rifle Length, with Three 11.625 inch TRO Modular Rails and an NM Sling Swivel
• Includes: Bolt Carrier Group, Charging Handle Assembly and One 10 Round Magazine

Tactical Carbine:

• Upper Receiver: Extruded Aluminum A4 with Port Door/No Forward Assist
• Barrel: 16-inch Chrome Moly, 1:16 Twist
• Muzzle Device: A2 Flash Hider, 1/2-28 Thread
• Handguard: RRA 15 inch 3G Free Float Rail Handguard, M-LOK® Compatible
• Includes: Bolt Carrier Group, Charging Handle Assembly and One 25 Round Magazine

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Price and Links:

• https://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_ID=1972 - $540-$750