300 Blackout Upper Receivers

LWRC International LWRC IC-A5 .300 Blackout 10.5" 1:7" 1/2x28 Tungsten Grey Complete Upper Receiver ICA5U3TG10

LWRC International LWRC IC-A5 .300 Blackout 10.5" 1:7" 1/2x28 OD Green Complete Upper Receiver ICA5U3ODG10

Blackout Defense 300 Blackout 13.9 Barrel Pistol Length Gas Forward Assist Blackout Black Upper Receiver

Blackout Defense 300 Blackout 13.9 Barrel Pistol Length Gas Slick Side Blackout Black Upper Receiver

Bilson Arms BA-15FC 300 Blackout 12.5in Forward Complete Upper Assembly Pistol Length 1-7 Twist 5/8-24 TPI Tactical Grey/Graphite Black

Bilson Arms BA-15FC 300 Blackout 12.5in Forward Complete Upper Assembly Pistol Length 1-7 Twist 5/8-24 TPI Sniper Green/Grey

Bilson Arms BA-15FC 300 Blackout 12.5in Forward Complete Upper Assembly Pistol Length 1-7 Twist 5/8-24 TPI Fde/Graphite Black

Bilson Arms BA-15FC 300 Blackout 16in Forward Complete Upper Assembly Mid Length 1-7 Twist 5/8-24 TPI Tactical Grey/Graphite Black

DPMS 300AAC 16 BLK UPPER

Alien Armory Tactical Anodized Aluminum Dust Cover - Gray | Includes Rod Spring & Clip

POF Minuteman 300 AAC Blackout 10.5" 30rd - Black

POF USA P415 Edge Upper Receiver Assembly .300 AAC Blackout 34 in Length 10.5 in Barrel 5 Position Adjustable M-Lok MRR Three-Prong Flash Hider Olive

AAC (ADVANCED ARMAMENT) Complete MPW Upper Assembly 12.5" 300Blackout

AAC (ADVANCED ARMAMENT) Complete MPW Upper Assembly 300Blackout 9"

AAC (ADVANCED ARMAMENT) Complete MPW Upper Assembly 16" 300 Blackout

DoubleStar 7.5in .300 Blackout AR Pistol Upper Complete HBAR M4 Feed Ramps 1x8 Twist Black

Noveske N4 AR-15 Complete Upper Receiver 300 AAC Blackout 8" Barrel 7" M-LOK Handguard Black

Noveske Rifleworks N4 Shorty Complete AR-15 Upper Receiver - 300 Blackout - 10.5" - Bazooka Green

Noveske AR-15 N4 Diplomat Complete Upper Receiver 300 AAC Blackout 7.94" Barrel NSR-7 M-LOK Handguard Tiger Eye Brown

Noveske AR-15 N4 Diplomat Complete Upper Receiver 300 AAC Blackout 7.94" Barrel NSR-7 M-LOK Handguard FDE

CMMG Dissent Mk4 .300BLK 16.1in Empire Profile Upper Group Armor Black

Stag Arms AR-15 Tactical Upper Receiver .300 AAC Blackout 8in Barrel GOV-CMV Profile 1-7 Twist 1/2x28 Left Hand VG6 Delta Black

Stag Arms AR-15 Tactical Right Hand Upper Receiver .300 AAC Blackout 8in Barrel GOV-CMV Profile 1-7 Twist 1/2 x 28 Thread VG6 Delta Black

Stag Arms AR-15 Tactical Upper Receiver .300 AAC Blackout 16in Barrel Hanson Profile 1-7 Twist 1/2x28 Right Hand VG6 Delta FDE