JavaScript seems to be disabled in your browser. You must have JavaScript enabled in your browser to utilize the functionality of this website.
SHOT Show 2025 Coverage Live Now - Click To Watch
Shop Popular AR-15 RiflesSHOP NOW
Shop Popular HandgunsSHOP NOW
Shop AllIn Stock AmmoSHOP NOW
Exclusive Classic Firearms 30 Round AR MagazineGET YOURS
Filter By
Tacfire .300 Blackout 5" AR-15 Complete Upper Receiver with Bolt Carrier Group, Charging Handle, M-LOK Handguard, a
Be the first to know when this product is back in stock!
Ballistic Advantage Modern Series 14.5" .300 Blackout, Pistol Length, 1:7 Barrel - BABL300009M
Proof Research 100523 AR-Style Barrel 300 Blackout 12.50" Pistol Length Gas System 1:8" Twist 5 Grooves, 5/8-2
Aero Precision 10" .300 Blackout CMV Barrel, Pistol Length with .750 Adjustable Gas Block, SS Pistol Length Gas Tub
Aero Precision 16" .300 Blackout CMV Barrel, Pistol Length - APRH100173C
Aero Precision M4E1 Enhanced 10" .300 Blackout Pistol Length Complete Upper Receiver with 9.3" Enhanced Handgu
Aero Precision M4E1 Enhanced 16" .300 Blackout Complete Upper Receiver with 15" Enhanced M-LOK Handguard - Cer
Aero Precision M4E1 Threaded 16" .300 Blackout Complete Upper Receiver with 16" ATLAS R-ONE Handguard - Anodiz
Aero Precision M4E1 Threaded 16" .300 Blackout Complete Upper Receiver with 15" ATLAS S-ONE Handguard - Cerako
Proof Research 100530 AR-Style Barrel 300 Blackout 12.50" Pistol Length Gas System 1:7" Twist 5 Grooves, 5/8&q
Aero Precision M4E1 Threaded 16" .300 Blackout Complete Upper Receiver with 15" ATLAS S-ONE Handguard - Anodiz
Aero Precision M4E1 Enhanced 8" .300 Blackout Complete Upper Receiver with 7" Enhanced M-LOK Handguard - APAR6
Aero Precision M4E1 Enhanced 16" .300 Blackout Complete Upper Receiver with 15" Enhanced M-LOK Handguard - Ano
Aero Precision M4E1 Threaded 8" .300 Blackout Complete Upper Receiver w/ ATLAS R-ONE Handguard - Cerakote FDE - APA
Aero Precision M4E1 Complete Upper, 10" .300 Blackout Barrel, EM-9 Gen 2 Handguard - Anodized Black - APAR640221M4