AR-9 barrel chambered in 9mm Luger with a 5.5-inch straight profile and 1/2x36 muzzle threads. Made from 4150 chrome moly vanadium steel with a QPQ black nitride finish; blowback operation needs no gas block or gas tube.
- Manufacturer Part # : LS9MM5.5-36
- Type : AR-9 Barrel
- Caliber : 9mm Luger
- Barrel Length : 5.5"
- Profile : Straight
- Muzzle Thread : 1/2x36
- Material : 4150 Chrome Moly Vanadium
- Finish : QPQ Black Nitride
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