This 9mm chambered 8.3 inch straight profile barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and 1/2-28 x .400 full profile threads.

• Designed to work with both Colt/RR and Glock style AR builds
• Compatible with EPC upper receivers, as well as standard mil-spec upper receivers
• 9mm on an AR15 platform operates by blowback and does not need a gas block or gas tube
• Threaded 1/2x28 to give you versatility when choosing a muzzle device
• Integrated barrel extension
• Since the "barrel extension" is an integral part of the barrel, the length stated is the true overall length. For example, an 11" 9mm barrel has the same outer dimensions/length as a 10.5" 5.56 barrel.
• IMPORTANT: A standard 1/2x28 flash hider will not have enough clearance for a 9mm round to pass. Before installing a muzzle device, ensure a 9mm round will drop freely through the muzzle device bore.