AR9 blowback barrel in 9mm with a 5.5-inch straight profile and 1:10 twist. No gas block or gas tube needed; compatible with standard mil-spec uppers and dedicated uppers.
- Manufacturer Part # : LS9MM5.5-28
- Type : AR-9 Barrel
- Caliber : 9mm
- Length : 5.5"
- Profile : Straight
- Finish : Black Nitride
- Material : Chrome Moly Vanadium
- Gas System : Blowback
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