Thread: Gunworks modular Stacker suppressor review

Suppressor tested 41mm braked and non-braked end cap.
I was lucky enough recently to be asked by the team at Gunworks to test a new suppressor they have been developing. I will point out that as part of the testing process I have been gifted the suppressor.
Take from that what you will, but I would have been happy to provide a review even without this incentive. All the ammo used for the test was at my own expense. So this is not a gilded review.
This new suppressor is inline with the current trend of modular suppressors and includes the option of a removable muzzle brake.
One of the changes that is nice to see is knurling on the individual baffles to assist in disassembling the suppressor for maintenance (it should be noted that even with the knurling it may be necessary to use a strap wrench to separate the baffles if they are stubborn). I believe Gunworks are currently developing a kit with a strap wrench and a piece or rubber for getting stuck baffles apart. I did have trouble separating the baffles after they had been sitting in my gun room for a month after previous testing (I did not clean the suppressor or disassemble it between testing), to the point I had to use a set of grips, and a rag wrapped around the body carefully to get them apart despite the knurling.
I was given 6 baffles in total to test with and without the braked end cap.
The day I spent on the range testing there was a light breeze and the occasional misty drizzle.
Below is a chart showing the numbers I recorded on a decibel meter, this was set up next to my right ear from a shooters point of view.




To put some context to those numbers, cycling the bolt resulted in a reading of 60-70db, 3-4 baffles seem to be the sweet spot for noise reduction. Personally, personally I would run 3 just to save weight.
I will also point out that the result of the non-braked cap with 3 baffles was skewed by 1 round that was significantly quieter and had a P.O.I much lower than the rest suggesting it was a light charge at lower velocity (Factory Federal match ammo). If I excluded this round the graph would be inline with the braked version. However I didn’t want to exclude data.
It's interesting that from a shooters point of view the braked cap is quieter/or as quiet but for less perceived recoil (I have no way to test actual recoil). I would never have picked them to be that close.
I was asked to see if adding or removing baffles effected group size. I ran 60 rounds in total. As far as baffles for tuning I didn't see any real correlation and I think any "group tuning" is more of a coincidence than a direct correlation, likewise it would be different for each barrel.
I only tested the shorter version (I was provided with a longer Over barrel version as well) as it seemed irrelevant to waste another 30 rounds on testing the longer heavier suppressor when wind noise and bird song had the dB Meter consistently reading around 40db (from the shooters perspective) before any shot was fired. Even if the longer version was a fraction quieter it is substantially longer and heavier. As previously pointed out cycling the bolt mad more noise than all but the 1 and 2 baffle tests (this required me to reset the decibel meter after cycling the bolt).
I have an earlier testing unit, I understand that Gunworks has since made some modifications to the baffles to further decrease weight in conjunction with adding gas disruptors machined into the baffles to further aid in decibel reduction.
I will update my review when I have the new baffles to test.