M11/380 acp: 'Double-Thread' M11A1/M12 barrel w 1/2-28 & 3/4-10 tpi's

  • Sale
  • $ 90

Now includes thread protector


We have listened to our customers and this new run has the requested features. We have enlarged the wrench flats for a more positive engagement as well as reduced the overall length of the 1/2 x 28 threads so there is no worry of hitting the internal baffles of the suppressor with the threads.

Exceptional quality replacement barrel for the Cobray/SWD M11/380 & M12/380 series of submachineguns & semi-automatic pistols.

Our custom 380 barrels have the larger 9mm 3/4" threads for installing an old-school 9mm SIONICS suppressor, or for installing our Pat-Pend 9mm MacAdapter, as well as having 1/2"-28 threads on the muzzle for installing a modern 9mm suppressor or AR15 type 9mm flash-hider/compensator.
Our custom 380 barrels, are physically/metallurgical identical to our M11/9 upgraded barrels, except chambered in 380.

Materials: 4140 Chrome-Moly steel.
Alignment: Bore-OD/Center.
Rifling: Button.
Twist: 1:10
Chamber: Upgraded (proprietary) from oem specifications & polished for improved feeding and extraction.
Suppressor contacts: 3/4-10tpi (oem/sionics) & 1/2-28tpi muzzle.
Suppressor alignments: 3/4" & 1/2" threads concentric with bore axis.
Length: 5 & 5/16" (OEM length)
Finish: Black oxide
Additional: Machined 7/8" wrench-flats for easy installation/removal

Proudly Made In The U.S.A

A direct and improved replacement for all M11/380mm style pistols & submachineguns.

For NFA/Semi type:
Gordon Ingram, Mitch Werbell, & Sionics
Powder Springs, GA
RPB Industries
Wayne Daniel,  Sylvia Daniel
MasterPiece Arms, MPA, Defender Series
M11, M11/380, MAC11, MAC-11, MAC-11/380, M11A1, M-12, M12, COBRAY-380

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