300 Blackout Upper Receivers

DPMS Kitty Kat Flat Dark Earth .300 AAC Blackout 7.5 Barrel 30-Rounds

CMMG Dissent MK4 Upper .300 AAC Blackout 10.5 Barrel

Dpms Kitty Kat Lower .300 AAC Blackout 7.5 Barrel

Maxim Defense Industries PDX Complete Upper .300 AAC Blackout 5.5 Barrel

Faxon FF-15 X-TRA Lite AR-15 Stripped Receiver Set Anodized Black

LanTac Raven Stripped Upper/Lower Receiver Set Multi-Cal

TacFire AR-15 Pistol Build Kit KeyMod .300 AAC Blackout

POF-USA AR-15 Minuteman Complete Upper Receiver 300 AAC Blackout 13.75" Pinned Barrel with Dead Air Adapter 13" M-LOK Handguard Black

American Tactical MilSport Lower .300 AAC Blackout

RISE BK-160 16 300BLK

Aero Precision Complete Upper Receiver M4E1-T .300 16in Blackout Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black

Radical Firearms Integrally Suppressed Upper .300 AAC Blackout 16 Barrel

AR-STONER AR-15 Pistol Kit 5" Barrel 300 AAC Blackout

POF Renegade Plus Tactical AR Pistol Burnt Bronze

POF Renegade Plus AR Pistol

CMMG Resolute 100 Series .300 BLK Complete AR-15 Upper Receiver - 16.1"

RADICAL FIREARMS MHR 300 AAC Blackout 10.5" 30rd - Black

Radical Firearms Forged

Dirty Bird AR-15 Forged Multi-Cal Receiver Set + SRMS Handguard - FDE, 9.5"

Stag 15 300 Blackout 8in Upper Receivers - Stag 15 .300 Blackout 8 In Upper

APF 300 Blackout Econo Pstl 7 Freefloat A3 Upper Rcvr

Anderson AM-15 Forged AR15 Matched Receiver Set

DPMS 300 AAC Blackout Silencer Ready Carbine A3 Upper

JACOB GREY FIREARMS JG15 ULTRALIGHT PISTOL