Shop 84 Deals on Rock River Arms Upper Receivers

Rock River Arms LR-308 Upper Receiver Assembly 308 Winchester, 7.62x51mm NATO 18" Stainless Steel Barrel 17" M-LOK Handguard Black

Rock River Arms LR-308 Upper Receiver Assembly 308 Winchester 20" Varmint Contour Barrel 17" M-LOK Handguard

Rock River Arms AR-15 A4 Upper Receiver Assembly 223 Remington (Wylde) 20" Chrome Moly Barrel 14" Handguard Black

Rock River Arms AR-15 Fred Eichler Series Predator Upper Receiver Assembly 223 Wylde 16" Stainless Steel Barrel 14" Handguard Black

Rock River Arms LR-308 Upper Receiver Assembly 6.5 Creedmoor 24" Barrel 17" M-LOK Handguard

Rock River Arms AR-15 A4 Upper Receiver Assembly 9mm Luger 16" Chrome Moly Barrel 6" Handguard Black

USED Rock River Arms Completed Upper Receiver FESP .223 Wylde 16 Inch Barrel Mid Lenght Profile 1-8 Twist 1/2-28 Thread Free-Float Handguard Brake

DEMO Rock River Arms Completed Upper Receiver X-1 .308/7.62x51mm 18 Inch Barrel 1-10 Twist 5/8-24 Threat Free-Float Handguard Brake Tan

DEMO Rock River Arms Completed Upper Receiver Left Handed RAGE .223/5.56mm 16 Inch Barrel 1/2-28 Thread Free-Float Handguard A2 Flash Hider Black

Rock River Arms Completed Upper Receiver Left Handed RAGE .223/5.56mm 16 Inch Barrel 1/2-28 Thread Free-Float Handguard A2 Flash Hider Black

Rock River Arms Completed Upper Receiver Operator ETR .308/7.62x51mm 16 Inch Barrel 1-10 Twist Mid-Length Profile 5/8-24 Threat Free-Float Handguard

Rock River Arms 20in Predator HP Upper Post Stainless Steel

Rock River Arms Completed Upper Receiver Left Handed RAGE 2G .223/5.56mm 16 Inch Barrel 1/2-28 Thread A2 Flash Hider Black

Rock River Arms Completed BilletvUpper Receiver .308/7.62X51mm 18 Inch Barrel 1-10 Twist Mid-Length Profile 5/8-24 Threat Free-Float Handguard Brake

Rock River Arms Completed Upper Receiver Left Handed RAGE .223/5.56mm 10.5 Inch Barrel 1-9 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hider

Rock River Arms BT-3 Completed Upper Receiver 6.5mm Creedmoor 28in 20in Barrel Standard SS Fluted Profile 1-10 Twist 5/8x24 Thread M-LOK Handguard

Rock River Arms A2 National Match Upper Receiver Assembly with National Match 1/2x1/2 .030 Hooded Aperture Rear Sight Black

Rock River Arms Completed Upper Receiver Predator HP A4 .308/7.62X51mm NATO 16 Inch Barrel 1-10 Twist Free-Float Handguard Brake Black

Rock River Arms Upper Receiver EOP .223 Wylde 18 Inch Barrel Varmint Profile 1-8 Twist Free-Float Handguard Black

Rock River Arms Completed Upper Receiver Left Handed RAGE .223/5.56mm 7 Inch Barrel 1-9 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hider Black

Rock River Arms A2 National Match Upper Receiver Assembly with National Match 1/4x1/4 .040 Hooded Aperture Rear Sight Black

Rock River Arms Completed Pistol Upper Receiver Mountain .223/5.56mm 10.5 Inch Barrel 1-9 Twist 1/2-28 Threat A2 Flash Hider Black

Rock River Arms A2 National Match Upper Receiver Assembly with National Match 1/2x1/2 .040 Hooded Aperture Rear Sight Black

Rock River Arms Completed Pistol Upper Receiver A4 .223/5.56mm 10.5 Inch Barrel 1-7 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hide Black