New Owner, Quiet that action!

[hyrulejedi86]

Hey everyone, I'm a new owner to the M&P 15-22 and so far it really has been great! Alot of fun to shoot. I even got to shoot a slidefire stock with it and what a blast! I plan on getting a suppressor for it and my handguns at some point next year (probably after we buy our house) so I've been doing allot of preparing for that on my hosts. One thing I've noticed is the action of the 15-22 is LOUD. I can tell by hand cycling, closing the bolt and through the videos online. Now, unfortunately I haven't gotten to test it out with a suppressor as I don't know anyone with one to do so but in the spirit of quiet I thought of an idea. I took one of the buffer pads for my 1911 22 and cut it up to fit the area of the bolt that it hits when it recoils backward. From hand cycling it seems ALLOT quieter so far, cycles by hand and locks back fine. Now, I notice that it goes just barely far enough back to allow the latch to lift and lock the bolt back so that could be a problem in firing but also maybe not. I know that the other part of the noise is the bolt closing but I'm sure there isn't much that can be done there without someone manufacturing an all new bolt design. I will have to try it out this week and report but I wanted to share with pics!

Thoughs?

 

[Majorlk]

I notice that it goes just barely far enough back to allow the latch to lift and lock the bolt back so that could be a problem in firing but also maybe not.

You can gauge very little from hand cycling; You need to actually fire the rifle. That said, I would be very careful putting pads on either the bolt or the end of the bolt carrier. The possibility of having adverse effects upon the functioning of the rifle is very real.

Personally, if you want a suppressed rifle with no action noise, buy a bolt action or a single shot.

 

[hyrulejedi86]

This is true, I admit. But I figure if these pads can work on a handgun they can probably work as well in this application. At least they are easily removed if there is a problem.

 

[Majorlk]

Good luck with the project and keep us up to date.

 

[johnr43]

Functional Modifications...

This is true, I admit. But I figure if these pads can work on a handgun they can probably work as well in this application. At least they are easily removed if there is a problem.

I would hasten to add that in a sense, you are using a personally experimentaly modified M & P 15-22. You should be also be aware you shoulder any consequences that come as a result of your functional modification of the rifle.

That said, welcome aboard and enjoy the fun the 15-22 is.

 

[iouri]

I've thought most of the noise is coming when face of the bolt slams on the breech and I'd echo what Major suggested - if you want quiet action go bolt or single shot.

 

[hyrulejedi86]

I appreciate the concern but I'm not too worried. I tested it out with 10 rounds 5 cci quiet and 5 standard velocity. I the action did seem quieter on the quiets but did not lock back on the last shot of the standards. Otherwise it functioned fine, but threw cases normally and loaded the next round as it always has. You guys are right though the majority of the noise does come from the forward motion of the bolt closing. Still I'm interested to see what it does after a few more rounds. I have another host but I like this rifle too much to buy something else.

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[johnr43]

I appreciate the concern but I'm not too worried. I tested it out with 10 rounds 5 cci quiet and 5 standard velocity. ...

Be sure to do some research on OOB issues while you're in the testing mode.

 

[hyrulejedi86]

I checked every shot before pulling the trigger and there were no instances where the bolt wasn't fully closed. I besides I didn't think the 15-22 could fire without being fully in battery.

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[Jyezahn]

I checked every shot before pulling the trigger and there were no instances where the bolt wasn't fully closed. I besides I didn't think the 15-22 could fire without being fully in battery.

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It can. There's a thread here floating around about a round that went boom... pretty sure it was out of battery. All it takes is the hammer to hit the pin and set off the primer.

 

[Majorlk]

I appreciate the concern but I'm not too worried. I tested it out with 10 rounds 5 cci quiet and 5 standard velocity. I the action did seem quieter on the quiets but did not lock back on the last shot of the standards. Otherwise it functioned fine, but threw cases normally and loaded the next round as it always has. You guys are right though the majority of the noise does come from the forward motion of the bolt closing. Still I'm interested to see what it does after a few more rounds. I have another host but I like this rifle too much to buy something else.

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You have reduced the distance the bolt travels rearward. Also, bolt lock back is problematic unless you pull the latch and cut two turns from the spring. Known problem; known solution.

 

[Majorlk]

I checked every shot before pulling the trigger and there were no instances where the bolt wasn't fully closed. I besides I didn't think the 15-22 could fire without being fully in battery.

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Under the right circumstances, ANY blow-back action can experience an OOB. The 15-22 had major problems along this line early in its production life.

 

[Tempest 455]

I can confirm, much of the noise shooting the M&P 15-22 supressed is from the bolt. Here is 5 rounds full auto with the slide fire shooting subsonic through my can. The bolt is louder than the ammo.

M&P 15-22 Slide Fire + Supressed - YouTube

 

[Majorlk]

I can confirm, much of the noise shooting the M&P 15-22 supressed is from the bolt. Here is 5 rounds full auto with the slide fire shooting subsonic through my can. The bolt is louder than the ammo.

The SlideFire is NOT full auto; there is a separate pull of the trigger (albeit very quickly) for each round fired. That's what the stock does when it slides. If it were full auto, it would fall under the NFA, and so far, the feds have said the SlideFire is still semi-auto and legal. Keep calling it full auto and they may rethink that.

As for the bolt noise, that is true of every suppressed semi-auto firearm, whether pistol or rifle.

 

[Tempest 455]

The SlideFire is NOT full auto; there is a separate pull of the trigger (albeit very quickly) for each round fired. That's what the stock does when it slides.

As for the bolt noise, that is true of every suppressed semi-auto firearm, whether pistol or rifle.

No ****...............

However, It's as close as you will get w/o a class III.

 

[Majorlk]

No ****...............

However, It's as close as you will get w/o a class III.

Please read my edited post.

 

[Tempest 455]

Please read my edited post.

Yes, I am full aware of the physics and laws pertaining to the trigger and slide fire. My point was to the OP, yes the bolt will makes lots of noise even when supressed.

If you want quiet, shoot a Savage MKII bolt rifle with a decent can and subsonic. All you hear is the firing pin and the bullet hit the target.

 

[Majorlk]

Yes, I am full aware of the physics and laws pertaining to the trigger and slide fire. My point was to the OP, yes the bolt will makes lots of noise even when supressed.

And MY point was you used very incorrect and misleading terminology. If we shooters do it, the non-shooters (and new shooters) will take it as gospel, because they don't know the difference.

[/quote]If you want quiet, shoot a Savage MKII bolt rifle with a decent can and subsonic. All you hear is the firing pin and the bullet hit the target.[/QUOTE]

You got that right!!!!

 

[hyrulejedi86]

Man your brave, shooting at that small target inside. I haven't gotten enough hang of my slidefire to hit that small area reliably yet. I also dont have a 3 lb trigger though either. I actually have an old bolt rifle that was my dad's first when he was 12 that works beautifully. I thought about having it threaded sometime in the future but semi auto is too much fun. I hear the 10/22s are quieter hosts. I thought about getting a 10/22 and going bullpup with it and making that my primary suppressed weapon when not using it on the handgun. But who knows when that will happen, i want to get the suppressor first.

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[Majorlk]

I have both rifles and the difference in bolt noise between the two of them is noticeable, but not significantly so.

Personally, suppressing a .22 LR rifle is great for shooting in confined areas, but if one needs a totally (or nearly so) silent firearm, the 15-22 isn't it - and neither is the 10/22.