Suppressors How to make a M&P 15-22 cycle quieter

rmyers2213

rmyers2213

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Minuteman
Jun 21, 2011
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Orem, Utah
#1
Looking to get my first can. I put my buddies can on my 15-22 and it cycles really loud. Is there a way to make it cycle quieter? Any help would be apreciatted. I'm sure there is but I am new to this game and would apreciatte any help/advice. Thanks in advance...
 
#5
Re: How to make a M&P 15-22 cycle quieter

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BOLTRIPPER</div><div class="ubbcode-body">try wearing hearing protection.....should be lots quieter.... </div></div>

Classic!
 
#6
Re: How to make a M&P 15-22 cycle quieter

I am not sure about your question, but I'll give it a stab.

"Looking to get my first can. I put my buddies (place maker/product) can on my 15-22 and there is no longer a blast signature nor is there supersonic bullet signature when running subs. But, I am not happy with the mechanical cycling noise. Is there a way to make it cycle quieter? I have/have not changed any springs. Any help would be appreciated. I'm sure there is but I am new to this game and would appreciate any help/advice. Thanks in advance..."

Is that about right? If it is...

The only option left to you are questions surrounding:

1. The back pressure of the suppressor. "My buddy" may have a can with huge backpressure, slamming the action back. Many cans overpressure the can to make it cycle on anything. This is particularly the case with .22 suppressors. That is good for some, poor for others. Here is where we ask..."what suppressor?"

2. Chamber design, unfortunately some chambers are designed to allow for them to cycle with filthy ammunition. Those very same chambers dump the case back pretty fast and can add to noise with chamber pop. That is why I have been so disappointed with..say the Ruger Mark III.... with its terrible new sloppy and loud chamber. Suppress it well and the chamber becomes louder.

Does that help?


 
#9
Re: How to make a M&P 15-22 cycle quieter

I run a Gemtech Outback II on my Walther P22. With CCI Subs it is very quiet.

The can isn't the issue.

I have not heard a suppressed 15-22. It may be that it has a louder action or that the action is opening faster with the suppressor. I know this to be the case with suppressed centerfire rifles. Delaying the opening of the action can quiet the system.
 
#11
Re: How to make a M&P 15-22 cycle quieter

Look, there is quite a bit of difference between a gas operated semi centerfire system and a blowback operated .22 semi. Yours is a blowback, you have four choices.

1. Try another can.
2. Increase the spring weight.
3. make the bolt heavier.
4. A combination of 2 and 3

If it was me, I would try another can as I wouldn't waste a dime on the others.

Lastly, the p22 is already subsonic. The only way that gun would go supersonic is if you got in a jet to shoot it. By shooting subs your dealing with the limitations of the blast performance of the can. In other words, try a different can.
 
#12
Re: How to make a M&P 15-22 cycle quieter

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RollingThunder51</div><div class="ubbcode-body">
Lastly, the p22 is already subsonic. The only way that gun would go supersonic is if you got in a jet to shoot it. By shooting subs your dealing with the limitations of the blast performance of the can. In other words, try a different can. </div></div>

Right, the P22 is sub-sonic even with HV ammo. However because it is running a short barrel it is dumping more of the blast into the can. If the silencer will suppress the blast from a short barrel adequately, then it will suppress the blast from a longer barrel adequately assuming the bullet does not go super sonic. A great example is my 28" 40XB shoots subs quiet, the p22 shooting the same ammo is loud as hell even if I hold the slide closed.

The difference in volume is more than likely the result of the noise coming from the opening of the action.

If the OP has not purchased a can, then it would of course be in his best interest to try as many as he is able to. Different individuals perceive different suppressirs differently.
 
#13
Re: How to make a M&P 15-22 cycle quieter

I shot my mp 15-22 with sparrow SS mounted head to head with ruger 10-22 with integral suppressor, and they sounded different but not one louder than other. I used Winchester subs in the silver box. Cycle was 100% so far. I had a flash hider made to use as thread protector, so its a cool set up. Buy the Sparrow SS with confidence.
 
#16
Re: How to make a M&P 15-22 cycle quieter

LW, the can should be designed for the short barrel pistol already. No extra points for a short .22 barrel and a blast can. Some .22s unburned powder can lead to noise, but this is not OP's problem. Your just dropping gas volume with subs. The P22 has a legendarily poor chamber as well, perhaps worse than the Mark III. I know what you mean as I too shoot all these hosts and had to learn the hard way.

Bama, If one took a true integral .22 that by design <span style="font-weight: bold">taps gas</span> with a <span style="font-weight: bold">supersonic</span> .22 until it is at maximum sub sonic velocity....and then one ran subsonics through it. Any .22 integral that sounds better with subs is either got a poor blast can or has not been properly tuned at the port. You remove the ss crack in its entirety, gone, once, then there is no gain only velocity and power loss. All one would be doing is dropping gas pressure within the can.

In other words one would be dropping...a subsonic load....<span style="font-weight: bold">lower</span>. Of course they sounded the same. One would be sending a projectile out with a fraction of the scheduled gas, a fraction of the velocity....a fraction of the terminal force. One would be underwhelming an integral to the point where even a crappy integral (no, Im not saying yours is) would sound good and then matched that against a subsonic rifle with a blast can. In order for anything of any value to come out of all this one would then need to grab a chrony, look at drop, check groupings and run a gel test. Otherwise? Its like matching potato guns.

The whole concept, the ONLY concept for dedicating a suppressor to a single receiver is to create a perfectly constant, just subsonic load. Same round, every time. Then, one gets 1) maximum terminal force 2) SS signature suppression 3) maximum potential range and if the integral is built properly the means to compress the barrel creating the conditions for maximum accuracy. Use a bolt and you loose mechanical action noise, leaving only two sources of sound left...operator noise and impact noise. That is the goal of integrals. The work in an .22 integral has more to do with high pressure gas pathing of the port route so that it arrives at the primaries PRIOR to the projectile (charging the can, yet another unique feature of the best integrals.) One hole, just one port, in the right place, just enough gas to tune and path to the suppressor. The work is in the tuning, the work is in the can.

Now some folks just add a blast can to the end of their barrel permanently, this is not an integral, but a "dedicated" can. They are worlds apart. The only good reason to build a dedicated can is either to conform to OAL in SBR or to attend to one State's statutes. Do they work, yes. Do they deliver just subsonic, rarely (as in I have yet to see one come close). But the subs are filthy, to date one cannot even find plated/washed bullets in subs so the suppressor must come apart. Nothing craps a can out like subs.

 
#17
Re: How to make a M&P 15-22 cycle quieter

Id like to figure it out also. I just SBR'd mine, and let me tell you, that is the greatest modification ever for this gun. Cut the barrel at 4.5" and chopped the handguard about 1" behind where the can ends. Run Federal bulk pack through it 100% subsonic, cycles great.

I hear you on the action noise though, the blowback design is just plain loud. I think a rubber buffer on the inside of the stock may help as long as its not too thick to hinder cycling.
 
#18
Re: How to make a M&P 15-22 cycle quieter

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: LoneWolfUSMC</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: RollingThunder51</div><div class="ubbcode-body">
Lastly, the p22 is already subsonic. The only way that gun would go supersonic is if you got in a jet to shoot it. By shooting subs your dealing with the limitations of the blast performance of the can. In other words, try a different can. </div></div>

Right, the P22 is sub-sonic even with HV ammo. However because it is running a short barrel it is dumping more of the blast into the can. If the silencer will suppress the blast from a short barrel adequately, then it will suppress the blast from a longer barrel adequately assuming the bullet does not go super sonic. A great example is my 28" 40XB shoots subs quiet, the p22 shooting the same ammo is loud as hell even if I hold the slide closed.

The difference in volume is more than likely the result of the noise coming from the opening of the action.

If the OP has not purchased a can, then it would of course be in his best interest to try as many as he is able to. Different individuals perceive different suppressirs differently. </div></div>

Its almost like two evils. A 22 being fired from a long barrel is almost the same affect as a 22 being fired from a pistol with a can. The length of the barrel is almost acting like suppressor on the rifle. The pistol has less barrel to burn in so therefore is louder.

I get what your saying though. I did some testing with a P22, 2211 TacSol, Ruger 10/22, and a old bolt action rifle. The P22 suppressed was only a few db quieter then the 1022 with a 20' barrel.
 
#20
Re: How to make a M&P 15-22 cycle quieter

Personally, I am with the OP here, I find the excessive noise of the bolt slamming open to be more annoying than a poor suppressor. It being so close to your ear, and plus the shock coming through the stock into your face makes it somewhat unpleasant to shoot.

If Im reading right he is not complaining at all about the muzzle report, which with subsonics is nothing even with a bad can like my old SS Mite. And its not even the blast noise escaping from the action. Its the mechanical slap of the bolt that hes trying to quiet down.
 
#21
Re: How to make a M&P 15-22 cycle quieter

Maybe you can find out what is hitting and build a buffer for it.

I remember some of the real early integral 10/22's had the same problem. The action was louder than the gun.

They used to ream out the hole for the buffer so they could put surgical tubing over it. Everyone was a lot happier when all the synthetic buffers came out so you didnt have to modify anything
 
#25
The issue is not the quality of the suppressor.
A subsonic 22 rifle is really low pressure and almost any decent can will take away the bark.
I was feeling like a dick for my last comment so I looked my M&P over and my first impression was that it was the plastic resonating from the bolt hitting the back of the carrier.

The logical approach would be to dampen the shock with a buffer.
The bolt and carrier are one piece and the face where the two impact are complicated unlike and AR where the bolt carrier and buffer meet.
The back of the buffer is hollow with a strengthening rib bisecting the cavity.
That seemed like a good place to dampen clatter to me.
My intention was to stuff those cavities with something vibration dampening and if that didn't work perhaps fill the plastic receiver extension with a dampener.
I shot several rounds suppressed then stuffed the cavity in the carrier with foam earplugs, just to see.
As expected not much of a difference until the eureka moment, the final shot.
It was by far the quietest.
The sound the OP is posting about is not from the rearward travel of the bolt, but from the bolt closing.
It is a metal on metal clack that reverberates through the plastic gun.
If one were so inclined they could machine one of the surfaces and install a nylon buffer to dampen the sound.
Otherwise, you're just going to have to deal with it.
 
#27
MLC said:
The issue is not the quality of the suppressor.
A subsonic 22 rifle is really low pressure and almost any decent can will take away the bark.
I was feeling like a dick for my last comment so I looked my M&P over and my first impression was that it was the plastic resonating from the bolt hitting the back of the carrier.

The logical approach would be to dampen the shock with a buffer.
The bolt and carrier are one piece and the face where the two impact are complicated unlike and AR where the bolt carrier and buffer meet.
The back of the buffer is hollow with a strengthening rib bisecting the cavity.
That seemed like a good place to dampen clatter to me.
My intention was to stuff those cavities with something vibration dampening and if that didn't work perhaps fill the plastic receiver extension with a dampener.
I shot several rounds suppressed then stuffed the cavity in the carrier with foam earplugs, just to see.
As expected not much of a difference until the eureka moment, the final shot.
It was by far the quietest.
The sound the OP is posting about is not from the rearward travel of the bolt, but from the bolt closing.
It is a metal on metal clack that reverberates through the plastic gun.
If one were so inclined they could machine one of the surfaces and install a nylon buffer to dampen the sound.
Otherwise, you're just going to have to deal with it.
Click to expand...

That metal on metal is where you get your headspacing. I wouldn't suggest a nylon buffer there. That clack is just the nature of the beast. If you're wanting that gun to be quieter you would have to hold the bolt closed. I'm not sure if anyone makes something to do that in that rifle like they do for the 10/22. Once you get to that point you could be shooting a bolt gun anyway.
 
#28
Geno, I agree which is why I stated that it would take machining to remedy the issue.
I made this video for a visual though it seems that all sounds are boosted to an equal level or the peak DBs both capped what the mic was capable of so they both were treated as equal.
You can hear the two distinct sounds in the video.
Pardon my camera and trigger work.
I'm not a lefty and was holding my iPhone with my shooting paw.



 
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