HK Pistol Parts
- Accessories
- Magazines
HK VP
- HK VP9
- HK VP9SK
- HK VP40
MP5
- HK 94
- MP5 SD
- MP5 Clones
HK .22lr Rifles
- HK MP5
- HK 416
- GSG522
MP5K
- SP89, MP5K-N
- HK SP5K
MP5 40
- MP5 10
- MP5 .357
B&T
- Brugger & Thomet
HK 91
- HK G3
- PTR 91
- CETME, C308
- G3K, PTR PDW
HK 93
- HK 33
- HK 53
- Vector Arms V53 V93
- C93
HK MR556
- HK 416
- HK 416A5
- HK CR556
HK MR762
- HK 417
- HK MR762 LR
HK G36
- HK G36K
- HK G36C
- HK SL8
HK USC Carbine
- HK UMP 45
- HK UMP 40
- HK UMP 9mm
PSG1
- MSG90
HK 21
- HK 21E
- HK 23E
- HK 11
HK MP7, MP7A1
HK Apparel
- Shirts
- Hats
HK Aficionado
- Posters
- Stickers
- Calendars
HK Knives
- Benchmade
HK 300
- HK G41
- HK SL6
Recently Added Products
Glock Parts
Sig Parts
AR-15, AK-47
Clipped & Pinned Services
Pre-owned HK Products
Emergency Preparedness
Gift Certificates

PWS FSC HK Threaded Barrel Compensator - 15X1

SKU: HKP-00837

PWS HK FSC 91 Compensator - Gen 2 - 15 X 1 Threads

With 2 new additional features:

Internal crush washer that allows for perfect fitment on the widest variety of factory HK and aftermarket barrels. Such as those found on the following firearms HK, PTR, CETME, SAR8/3, Clones & other custom builds. Each PWS comp also includes the tried and true HK style retaining ring for splined barrels such as those found on non-PTR barrels.

Between these 2 new innovations, this is now the finest PWS HK compensator ever made. Ideal for all .223/556 & .308/762 caliber HK rifles. The PWS compensator tames recoil and keeps you on target. The PWS compensator achieves easier and faster followup shots than other muzzle brake devices. Adds an aggressive look to your rifle but TAMES the recoil like no other!


Compatible with all HK style models with barrels threaded 15 X 1 :

  • HK G3, 91, CETME
  • PTR All Variants
  • HK 93, 33, 53
  • HK MR762
  • Other HK rifles and pistols with 15X1 threaded barrels
  • Custom HK clones and custom builds


This is the most effective compensator available for HK rifles period!

We offer healthy quantity discounts on multiple units.

Specifications of the PWS HK Comp:

  • 2.55 inches in length
  • .22 mm diameter
  • 15 x 1 right hand thread
  • US 922R Compliant Part

The FSC91 Tactical Compensator has all of the compensation of the standard PWS DNTC compensator combined with enough flash suppression to keep the flash out of your optics & line of sight.

The PWS FSC HK Compensator has been classified as a non-flash suppressing device by the BATFE. This item is also legally considered a compensator. (see attached BATFE approval letter.) Great for those living in NJ, NY, etc.

Update - June 2018 The California DOJ has determined that this product is not legal in the state of California.

Video Of The PWS In Action: Demo with 6.8 & .308


Origin: USA
922r Value: 1
Price: $98.95
In Stock
Save to my Wish List
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
PWS FSC HK Threaded Barrel Compensator - 15X1
(Click to see larger image and other views)
Quantity Save Reduced Price
1st unit $98.95
3 or more units. $5.00 $93.95
6 or more units. $10.00 $88.95
Previous Item   Next Item
Related Items Others Found Useful.
Check the check boxes next to the additional products that you would like to add to the shopping cart, then click on the "Add to Cart" button above. A check box is not shown if a product requires that you select an option or fill out a field. () indicates a required accessory.

Product Reviews

Write your own review


"Outstanding muzzle device for PTR91"

Maxx Taylor on 6/18/2013 2:27:30 PM

Overall Product Rating:


I had one of these on a "CAI Cetme Sporter"...I could not make it fit properly, but it certainly did reduce perceived recoil when it did stay clocked. Now, I have added one to a new PTR91 and it fit perfectly. I understand that the crush washer that is included is designed for the contour of the PTR barrel. That said, the reduction in perceived recoil is almost "magical", not only for comfort, but for being able to control this beast of a rifle. If all of that is not enough, I test fired the rif... More details


"Looks and works great"

Troy Price on 7/15/2011 10:51:37 PM

Overall Product Rating:


I put this on a greek built springield sar-8 this device works great in reducing recoil. I just wish it would screw on tight and flush and not have to use the allen screw. It also is great because it counts as one of the american made parts


"Awesome break"

Matthew Spragg on 1/19/2017 7:05:50 AM

Overall Product Rating:


This muzzle break is incredibly awesome helps stay on target and keeps muzzle down for quick follow up shots very easy to install and gives the gun a look that is awesome


"Muzzle Brake"

Jeff Meyers on 6/18/2013 7:22:25 PMVerified

Overall Product Rating:


HK Parts Service-Excellent. Havent tried the rifle with this muzzle brake. But have used the same brake with 5/8x24 pitch on a bolt gun. Makes a real difference. The PTR91 is a heavier rifle than my bolt gun, so the recoil and climb should be significantly reduced. HKParts is definitely 2 thumbs up.


"best mod ever"

nathan herning on 3/14/2013 12:49:56 AMVerified

Overall Product Rating:


Easy install,works great.


"Great"

Jim Thompson on 9/2/2013 2:36:47 PM

Overall Product Rating:


Loud, but prolly the best around, you will notice the difference and it is worth it.


"Inconsistent"

Darryl Conner on 6/9/2011 2:40:10 PMVerified

Overall Product Rating:


While the structure is the same, the finish and parts package were different. One was flat parked, one was satin black. One pkg had a single spacer washer, the other set has several shim washers. When I asked, I was told that HKParts buys in lots of 200 and I got one from each lot. PWS apparently has widely varying ideas of what spacers and finish to use. For functio...it doesn't matter. If you want looks and function, maybe look elsewhere than PWS.


"Very Effective"

M Matias on 1/15/2015 12:51:44 PM

Overall Product Rating:


Very Effective at keeping muzzle rise at a minimum with the ability to make up shots quick with the ability to keep sights on target. I did add a heavy buffer before adding the FSC91 and didn't notice any changes in the recoil or muzzle rise till I added the FSC91 so I'm not sure if it was a combination of the two or the compensator by itself.


"quality product"

joel bauer on 4/22/2012 6:31:53 PM

Overall Product Rating:


One of the best on the market for reduced felt recoil and target followup shots.


"PWS FSC Threaded Barrel Compensator"

james clodoveo on 5/30/2012 3:03:21 PMVerified

Overall Product Rating:


I really like the compensator. Had to machine the crush washer to get it to line up correctly.