Douglas 1-8 Twist SPR/MK-12 Barrels 18.1

Length          18.1″
Caliber         .223/5.56
Gas Block    .750



Special Purpose Rifle Contour Barrel.

This barrel comes with M4 Feed Ramps, MID, Intermediate Length or Rifle gas system, 1/2-28 threaded muzzle, and the proper OPS, Inc. muzzle contour for OPS, Inc. collar.

Chamber type and Finish is your Choice.


Additional information

Barrel Brand


Gas System Length


Chamber Type





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