Additional information
| Weight | N/A |
|---|---|
| Finish | BLACK, FDE, BLEM BLACK, BLEM FDE |
$100.00
1 x FN 509 Compensator
1 x Shim Kit:
Optional “Muschi” Mounting Block
NOT Compatible with:
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.
The 509 duty comp was designed to work with most factory loaded ammunition and yields and average 30-35% reduction in muzzle climb with 115gr UMC
115gr:
Federal American Eagle
Speer Lawman
Wolf
Remington UMC
Sig Sauer
Fiocchi
Magtech
124gr:
Blazer
Speer Lawman
Federal American Eagle
Sig Sauer
Winchester
PMC
Remington UMC
147gr:
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
| Weight | N/A |
|---|---|
| Finish | BLACK, FDE, BLEM BLACK, BLEM FDE |





Sonny (verified owner) –
FN509 Tactical Viper
Did a bunch of searching and reviews for a comp and ended up ordering the PMM comp with the extra shim kit. I highly recommend adding it with your purchase as I actually ended up using one .10, .05, and both .02 shims ( one .02 from what came with it, and the other .02 from the extra shim kit ) . Fit is amazing and absolutely makes the gun, 100% worth the purchase price!
Mark England (verified owner) –
Spectacular work PMM. Fitment was flawless.
Citizen (verified owner) –
Excellent comp, works great keeping muzzle down. No problems thus far with cheapo 115 and 124 NATO spec in fn509c tac. With a tlr-1 and this comp, the 509c is definitely front heavy when running 12 rnd mags but still conceals very well in an odin holster.
Angeltris (verified owner) –
Runs with no malfunctions on stock recoil spring with 115gr. This comp is awesome. Adds to the shades of FDE and looks amazing on my 509 Tac.
Anthony (verified owner) –
Simple install, noticed a difference in the very first shot. Would definitely recommend ????