Suppressed G17 - Recoil Spring Weight

[Captains1911]

When I shoot my G17 with an AAC Illusion, I get an occasional particle/grit/sand blast blowback to the face, and the gun gets extremely dirty. Is this due to the barrel unlocking a little too early? Would a stronger recoil spring, like say 20 lbs, help mitigate either of these issues?

 

[MachIVshooter]

maybe minimally, but you could also end up with cycling problems. I'm sure you've noticed how much slower the pistol cycles with a can on it; even with a booster, you're still adding considerable mass to the reciprocating assembly.

That said, recoil springs are cheap. Try a couple of different weights and see what happens.

 

[Captains1911]

I actually didn’t think that a suppressor on a pistol slows the action, since on fixed barrel semi-autos it increases it, but it makes sense.

Regarding cheap recoil springs, I agree, but not so much with aftermarket guide rods needed to use the springs.

 

[cottonpicker]

I had a problem with my Glock 17 running a Gemtech Multimount. The problem was sound related as I was getting blowback noise due to the action opening up too fast. I switched to an 18 lb Wolff spring and it ran much quieter. Don't know if that would help you, but if your getting blowback, maybe a one pound heavier spring would help run cleaner??

 

[MachIVshooter]

I had a problem with my Glock 17 running a Gemtech Multimount. The problem was sound related as I was getting blowback noise due to the action opening up too fast. I switched to an 18 lb Wolff spring and it ran much quieter. Don't know if that would help you, but if your getting blowback, maybe a one pound heavier spring would help run cleaner??

Port noise is a common problem with blowbacks, but that's very odd on a short recoil handgun. That can must generate a lot of backpressure.

 

[GarrettJ]

I found a light spring produced quite a bit of ejection port noise, and lots of crap in the face. He factory G17 Spring was much better.

I ended up trying progressively heavier springs, to see how high I could go and still get 100% functioning. It does continue to help, but I experienced diminishing returns.

I forget what spring weight I got up to. In the end I went back to the OEM spring, as it would run with all subsonic loads. The heavier springs wouldn't always run some loads.