5.56x45mm NATO Gun Parts

Rock River Arms 16in R4 1-9 CL LTWT Barrel Black

Rock River Arms 16in Mid LTWT CL Barrel Black

Rock River Arms 7in Pistol CM Barrel Assembly w/A2 Front Sight Black

Rock River Arms 7in Pistol CM Barrel Black

Rock River Arms 16in CAR CM Barrel Assembly Black

Rock River Arms 16in CAR CM Barrel Black

Rock River Arms 14.5in CL 1-9 Barrel Assembly 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 Forged A2 Stripped Upper Receiver Black

Rock River Arms 10.5in CL 1-7 Full Auto Barrel Black

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 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 Completed Pistol Upper Receiver A4 .223/5.56mm 7 Inch Barrel 1-9 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hide Black

DoubleStar DS-4 AR-15/M4 Flattop Upper Heavy Match Barrel 16 inch 5.56/.223 1-9 Twist A1 Muzzle Device Black

DoubleStar 16in 1x9 DS-4 Gov't Barrel with Forged Sight Base Black

DoubleStar Complete Upper Receiver Standard Flattop with M4 Feed Ramps Black

DoubleStar M-16 Full-Auto Bolt Carrier Group BCG Black

DoubleStar 16in 1x8 SS WAG Air Gauged Barrel with Gas Block Black

Afghan N4 5.56 14.5 Inch FDE DDF Barrel

Afghan N4 5.56 14.5 Inch Black DDF Barrel

Noveske CHF Chrome Lined Switchblock 5.56 Barrel 14.5in Light Carbine Wrench Headspaced Bolt 0

Noveske CHF Chrome Lined Switchblock 5.56 Barrel 12.5in Light Leonidas Wrench Headspaced Bolt 0

Noveske CHF Chrome Lined Switchblock 5.56 Barrel 10.5in Light Shorty Wrench Headspaced Bolt 0

Noveske Switchblock 5.56 Barrel 12.5in Leonidas Stainless Wrench Headspaced Bolt 0