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PMM Sig Sauer P320 Gen 1 JTTC for Threaded Barrels


Would You Like An Extra Shim Kit?

Yes (No Loctite 272)

PMM JTTC "Muschi" Mounting Block

Order total:

Earn up to 100 Points.

Product Details

Fitment Guide


13.5×1 LH Metric Threaded

  • Sig Sauer Factory Threaded 13.5×1 LH Metric Threaded Barrel


Faxon “C” Marked 1/2×28 Threaded

  • Faxon Compact Barrel
  • This comp can accept slightly longer threaded barrels, so if you’re unsure what to order, this will be your safest bet. We recommend picking up spare shims in scenarios like this.
  • Faxon shoulder depth: .475″


SilencerCo “F” Marked 1/2×28 Threaded (These also work with True Precision barrels)

  • Full Size SilencerCo 1/2×28 Threaded Barrel
  • Griffin Armament 1/2×28 Threaded Barrel (You’ll need extra shims)
  • SilencerCo shoulder depth: .375″


Sig X-Carry Legion “△” Marked 1/2×28 Threaded

  • Sig Sauer Factory Threaded 1/2 x 28  Threaded Compact Barrel


The PMM Compensator uses a proprietary mounting system much like what is found on all modern rifles utilizing a combination of shims and proper timing of the compensator in relation to the Pistol slide.

Additionally, the PMM compensators utilize a single port design at the 12 O’clock position which maximizes the effectiveness of the compensator in keeping the muzzle of the pistol down and allows the slide to “track” faster and more accurately for follow up shots.

During testing the PMM compensators were designed to work with most factory loaded ammunition but will yield the best results with a +P or Nato spec cartridge. We have adapted our designs to integrate with and complement the design of your pistol so no longer does a compensator have to look like an afterthought slapped on the end of your pistol, Rather it Delivers unmatched performance and looks.




1 x P320 Gen 1 Compensator

1 x Shim Kit

-4 x 0.010″ Shim

-2 x 0.005″ Shim

-1 x 0.002″ Shim

-1 x 0.05mL Vial Loctite 272

*If ordering a 13.5×1 LH Metric compensator or a compensator for X-Carry Legion, your shim kit will include a PMM Metric Shim Alignment Rod. These are necessary for installing.*


  • 7075 Aluminum finished in a type 3 class 2 Black of FDE hardcoat anodize.
  • No set screws, mounts like a muzzle device on a rifle.
  • Captured design ensures that even if your comp comes loose it will not come off or impede function.
  • Technology born from our PMM X-Comp pistol.
  • Made in the USA


Download PDF pmm_just_the_tip_compensator_installation_instructions__1_.pdf


1/2 x 28 JTTC Installation Video For PMM Faxon and SiCo Comps

13.5×1 (LH threaded) Metric Threaded JTTC Installation Video/ PMM X-Carry Legion Comps (RH threaded)


Additional information

Weight N/A


Thread Pitch

1/2×28 compact Faxon, 1/2×28 Silencerco Compact & Full Size, 13.5X1 LH, X-Carry Legion

Customer reviews

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63 reviews for PMM Sig Sauer P320 Gen 1 JTTC for Threaded Barrels

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