Not cycling with can...

[ar15dave]

I have SIG P320 M17 with a threaded barrel. If I shoot it without a suppressor it cycles just fine. If I add a suppressor it will not cycle at all. Won;t extract the empty or eject it correctly.

Any thoughts as to what might be causing this?

Thanks in advance

 

[Alea Jacta Est]

Gas issue

 

[Park ranger]

Do you have a booster on the can?

 

[Bafflingbs]

Do you have a booster on the can?

This!!!!!

 

[Sundazes]

Anyone ask if you are using a booster or Neilson device?

 

[John from MD]

Sure sounds like the booster is not installed.

 

[ar15dave]

Do you have a booster on the can?

Yeah. I am using a Gemtech Multimount with booster.

Might try my Osprey. Although right now it is setup for a PCC (no booster)

 

[jef955]

I have just recently gotten into supressors, I have 4, waiting on a 5th, and ran into the exact same problem you have, with two P320 3.9 inch guns, with a Silencerco Omega 36M, and a mix of ammo.

From my firsthand experience, you have 2 options, first is more powerful ammo. 9mm Nato or Winchester M1152 is your friend.. Also defeats the purpose of the can, if maximum sound supression is your goal, but mine functioned 100 percent with these 2 ammo types.

The second is change recoil springs - I bought a kit from Armory craft which included the guide rod, spacer/reducer for the slide, and 4 recoil springs. I settled on the 13 pound for 147gr subsonics, and all my problems have gone away.

Food for thought, I have a gen 5 Glock 19 that ran like a banshee straight from the box, so it seems to vary from gun to gun.

Wife's P320 ran without a hitch from the get-go, with an Octane 9.

Welcome to the club !

 

[fishgutzy]

You need one of them blue recycling cans.

Sent from my SM-G998U using Tapatalk

 

[teratos]

Blaster had the same problem. Apparently not uncommon with P320’s. Hopefully he’ll chime in.

 

[r3t1awr3yd]

Googling "sig sauer p320 not cycling with suppressor" yielded quite a bit.

Grey Ghost Precision M17 Pistol

Read: Grey Ghost Precision M17 Pistol from Dave Merrill on October 3, 2010 for Recoil.

www.recoilweb.com

SUPPRESSOR PROBLEMS & FIXES​

Something that was only quietly whispered about at first is now common knowledge: The P320 family doesn’t suppress great (or sometimes at all) right out of the box, and the M17 being a variant, falls right into that category. In fact, according to multiple confirmed sources, SOCOM has been continuing to simply purchase Glock pistols instead of adopting the M17 for this exact reason. Seeing as how our rule is to put a can where you can, whenever you can, that simply wasn’t going to do. We’d have to fix it.

The main issue appears to be that the slide stays in battery slightly too long for the booster assembly to do its job. To put it in plain language, a booster assembly temporarily decouples the weight of the silencer from the barrel, for just enough time for a tilt-action pistol to cycle. The P320/M17 slide simply doesn’t unlock fast enough to allow the booster to work.

Because Sig Sauer has yet to come in-line with the only nation that actually put a man on the moon, OEM barrels are threaded in metric 13.5x1LH, we initially opted for an aftermarket SilencerCo ½x28mm threaded barrel. Just as many who came before us regardless of manufacture, we experienced a lot of failures to extract. After examining the previously virginal SilencerCo barrel and the OEM M17 barrel, we noticed some wear marks on the SilencerCo barrel that directly corresponded to a slight angle cut on the front hood of the M17. So of course, we broke out some tools to file to fit.

Just carefully matching the front hood angle of the M17 gave us a little improvement — now at least some ammunition would work. We then took the extra step of replacing the captive recoil spring assembly with a 1911-style so we could play mucky muck with spring weight. After much experimentation, the combination of the modified barrel and a 14-pound recoil spring allowed the M17 to run with lightweight silencers and fastmoving ammunition.

But we’re not done.

The Grey Ghost Precision P320/ M17 slide combined with our modified barrel ran with heavier silencers and heavier ammunition — with the factory recoil spring assembly. A drastic improvement. By far the best combination we ran was a Griffin Armament threaded barrel with the GGP slide. The Griffin barrel didn’t require any modifications to work with the slide straight out of the box, though it still has the same limitations of our modified SilencerCo barrel when mounted to the Sig Sauer slide.

We can’t tell you exactly why this combination works better than OEM, but we suspect it’s at least partially due to the lower weight of 9.6 ounces due to the lightening cuts versus the M17 slide at 10.7 ounces, which allows for the pistol to unlock faster while our booster assembly still does its job.

 

[ar15dave]

I am using a Silencerco Slide and threaded barrel. Might need to try the Sig factory threaded barrel on the factory slide and see how that goes.

I have tried different guiderod and spring setups and still same issue.

Will read the article above and see what I might be able to do to fix it. Maybe Blaster can give me some insight.

Thanks,

 

[shiza]

Are you lubricating the booster? I'll have issues with my YHM booster if I run it dry. I typically use white lithium grease

 

[ar15dave]

Seems to be a common theme with the P320/M17 pistols. I am going to try some of the suggestions I found online and see if that helps. Will post if I find a fix.

 

[Bountied]

Are you lubricating the booster? I'll have issues with my YHM booster if I run it dry. I typically use white lithium grease

My Rugged Obsidian 45 started having issues returning to battery, I lubed the booster spring and piston and the issue went away. It would consistently be 1/4" out of battery but the lube fixed it. Like you said med/heavy grease worked well, I used Lubriplate 130A.

 

[John from MD]

My Rugged Obsidian 45 started having issues returning to battery, I lubed the booster spring and piston and the issue went away. It would consistently be 1/4" out of battery but the lube fixed it. Like you said med/heavy grease worked well, I used Lubriplate 130A.

I used to use Lubriplate in my cans but found that this grease stays longer and sprays on. I also spray the baffles as I shoot lead and this grease keeps build up down so they clean in 15 minutes.

Pardon Our Interruption

 

[Blaster229]

Same issue. I changed the spring, lubed everything but not have shot it yet.

 

[Bountied]

I used to use Lubriplate in my cans but found that this grease stays longer and sprays on. I also spray the baffles as I shoot lead and this grease keeps build up down so they clean in 15 minutes.

Pardon Our Interruption

Thanks, I'll check it out.

 

[ar15dave]

I used to use Lubriplate in my cans but found that this grease stays longer and sprays on. I also spray the baffles as I shoot lead and this grease keeps build up down so they clean in 15 minutes.

Pardon Our Interruption

Is this grease good for high temps? These cans can get pretty hot.

Dave

 

[John from MD]

Is this grease good for high temps? These cans can get pretty hot.

Dave

It cooks and leaves a residue that keeps lead and carbon from bonding.