300 Blackout Upper Receivers

HM Defense HM15 Billet Upper & Lower .300 BO Rail HM15-SPFSS-300-LR

Ghost Firearms Vital Upper Receiver Pistol Lower Parts Kit .300 Blkout 7.5in Pistol Light HBAR Barrel 1-8 Twist 7in M-LOK Freefloat Handguard A2

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol Light HBAR Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard Flash Can

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol Moly Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol Moly Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Elite Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol 4150 Moly Steel Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol Moly Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Upper Receiver Rifle Lower Parts Kit .300 Blackout 16in Pistol 4150 Moly Steel Barrel 1-8 Twist 14in M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Rifle Lower Parts Kit .300 Blackout 16in Pistol Moly Barrel 1-8 Twist 14in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 11in M-LOK Freefloat Handguard Flash Can

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Steel Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Elite Complete Upper Receiver .300 Blackout 10.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard A2

DPM KITTY A4P 300BLK 30R 7 FDE

CMMG BANSHEE Mk4 Suppressed Upper Group .300 BLK 6.5"

CMMG Banshee Mk4 Suppressed Upper .300 BLK 6.5"

Radian Model 1 AR-15 Pistol Complete Upper Receiver 300 AAC Blackout 8.7" Barrel

Yankee Hill Machine Caliber Engraved AR-15 Ejection Port Cover Assembly 300 BLK Aluminum Black

POF-USA AR-15 Renegade+ Complete Upper Receiver 300 AAC Blackout 10.5" Barrel Carbine Length 9" M-LOK Handguard Black

Radian Weapons Model 1 Upper/Handguard Set 8.5

PWS AR-15 MK109 MOD 1-M Complete Upper Receiver 300 Blackout 9.75" Barrel Long Stroke Piston

CMMG Resolute MK4 Upper .300 AAC Blackout 16.1 Barrel No BCG/Charging Handle

TacFire Dust Cover for AR-15

PWS AR-15 MK109 MOD 2-M Complete Upper Receiver 300 Blackout 9.75" Barrel Long Stroke Piston