MMC Combos AR-15 Pistol Big Bore Build Starter
Featuring A 10.5" .450 Bushmaster 4150 CMV 1-24T Heavy Barrel
And KAK Industries 4 Prong Phantom Style Muzzle Brake
The XX-Treme Barrel Company Presents A 10.5" .450 Bushmaster Barrel. This Barrel Is Made From 4150 CMV With A Manganese Phosphate Finish. This Heavy Barrel Also Includes A Twist Rate Of 1-24 And A Thread Pitch Of 5/8x32.
This Upper Features A KAK Industries Phantom Style Muzzle Device. This Device Features An Aggressive Profile With 4 Prongs In The Front To Minimize Flash And Dissipate Gasses More Effectively.
Also Included Is A Davidson Defense Gas System That Will Be Assembled.
Barrel MFG: XX-Treme Barrel Company
Barrel: 10.5" .450 Bushmaster 4150 CMV Heavy Barrel
Twist Rate: 1-24T
Thread Pitch: 5/8x32
Gas System Length: Carbine
Gas Block: .750 Low Profile Steel Gas Block
Gas Tube: Tactical Superiority Stainless Steel Carbine Gas Tube
Muzzle Brake: KAK Industries 4 Prong Phantom Style Muzzle Brake
Please note: If the listing says "In-Stock" it means we have all of the items in stock. Our assembled upper receivers are made to order, please check this LINK to view our most up to date shipping status.