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PMM Duty Compensator for Glock 19/17/34/26


Would You Like An Extra Shim Kit?

Yes (No Loctite 272)

PMM JTTC "Muschi" Mounting Block

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Product Details


1 x PMM Compensator for Glock

  • 7075 Aluminum finished in a type 3 class 2 Black or FDE hardcoat anodize
  • 1/2 x 28 thread pitch
  • 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

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

Optional Muschi Mounting Block


Generation Guide:

Glock 45, 19x, 26, 47, and 49 require a gen 5 comp.

These comps are designed to fit factory slides. If you are purchasing this for an aftermarket slide, please contact to confirm which gen comp you will need.


Barrel Fitment:

PMM approved Glock 19 threaded barrels include: PMM, FAXON, SKALA SYSTEMS, SILENCERCO (1/2 x 28). Gap will vary.

PMM 1/2 x 28 threaded barrels for Glock can be found here, or save by buying a barrel and comp together.

We cannot guarantee fitment on the Glock 19x MOS factory threaded barrel. We advise against using our duty comp for this barrel.

We have seen VICTORY FIRST, LANTAC, RIVAL ARMS, COMBAT ARMORY AND ZEV WORK but have not tested them in house. ZEV BARRELS may require additional shims. Gap will vary.

IF YOUR BARREL IS NOT LISTED ABOVE, WE CANNOT GUARANTEE FITMENT. Use the drawing below to determine if your threaded barrel will be a good fit.


Recoil Reduction:

All of our compensators are tested in a ransom rest and measured with a digital inclinometer.

The PMM duty comp for the Glock was designed to work with most factory loaded ammunition and yield 30-35% reduction in muzzle climb (with 115gr UMC)




PMM Holster Recommendation:

Cascadia Concealment 


Tier 1

Active Retention (Level 2 & 3) Duty Holsters (Namely Safariland):

PMM Recommendation- RDR Gear

G19 w/ duty comp = In between length and a G34 holster is required.
G17 w/duty comp = G34 length and a G34 holster is required.

PMM suggests using high quality holster manufacturers and not ones who skimp on material and care more about marketing.. We have great success with T-Rex Arms and Tier 1 Concealment.
T-Rex Arms also has a “threaded barrel” option on its holster builders and this option will cover our Micro comps perfectly.


Ammo Recommendations:


Federal American Eagle

Speer Lawman


Remington UMC

Sig Sauer





Speer Lawman

Federal American Eagle

Sig Sauer



Remington UMC


Most ammo will run, but you will see less performance due to a lack of velocity


Ammo to stay away from:

Blazer 115

Winchester White Box 115

Armscor 115

PMC 115

All reloads or reman ammo


PMM Disclaimer:

PMM reserves the right to make esthetical design changes. While we try to accurately represent our current product offerings’ designs, there may be some esthetical variation from the product posted on this page and the product you receive.


DISCLAIMER: This product is not manufactured, authorized, endorsed,
or warranted by GLOCK. GLOCK does not warrant or represent that this
product is compatible with GLOCK pistols.

DISCLAIMER: “GLOCK” is a federally registered trademark of
GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and
GLOCK Ges.m.b.H. Neither Parker Mountain Machine & Armory nor
this site are affiliated in any manner with, or otherwise endorsed by,
GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page
is merely to advertise the sale of GLOCK pistols, parts, or components.
For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products
and parts visit

Additional information


Black, FDE


Gen 1-3, Gen 4, Gen 5, 19x MOS

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