Lead & Steel 4.5″ AR-9 9mm Barrel – 1/2 x 28mm, Nitride

Our Lead & Steel AR-9 barrels are made from 4150 Chrome Moly Vanadium with QPQ Corrosion Resistant finish.

Features:

• 4.5″ Barrel – 1/2×28 muzzle threads
• Chambered in 9mm
• 1:10 twist rate
• Straight profile
• 8oz
• Blowback gas system – no gas block or gas tube needed
• Compatible with standard mil-spec uppers and dedicated uppers

*Please note: A .223/5.56 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.

Please follow your state’s applicable guidelines regarding barrel length restrictions.