These are an ideal cheap alternative barrel for building out a MK12 MOD 0
Ballistic Advantage, Modern, Barrel, 556NATO, 18″, 1:7, SPR Rifle Barrel With Ops 12 Profile
- 4150 Chrome moly vanadium
- SPR profile
- QPQ finish
- Rifle-length gas system
- 1:7 twist
This 5.56 chambered 18 inch Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension. This barrel features a longer .750″ profile dimension necessary for proper installation of the OPS Inc. 12th model collar and suppressor.