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Rimfire Firearms .22, .17 and other Rimfire Handguns and Rifles

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Old 02-21-2013, 2:49 AM
el tardo el tardo is offline
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Default S&W MP 15-22 mods

just got one home tonight and tore it apart to paint it. my question is after taking it apart it looks alot like a ruger 10/22 system.yes i know there both blow back bolts and have springs. so with a ruger 10/22 you can get softer springs to allow you to shoot sub sonic ammo with any issues.
i took the bolt apart on the S&W and you can remove its spring as well. so i was thinking you can run a softer spring so it can run sub sonic ammo.

this gun is for my son cause i kinda took over his 10/22 and turned it into a killer.

so has anyone ran sub sonic ammo and or played with a softer spring?
the manual says the gun wont cycle with sub sonic ammo. ruger said the same thing but a man named kidd makes special toys for them and they can shoot any ammo.

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Old 02-21-2013, 3:57 AM
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roushstage2 roushstage2 is offline
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There are many people around the internet that have said their 15-22s will cycle certain brands of subsonic ammo. Maybe just try a few different brands and see what happens. If you got an extra spring, I suppose you could try cutting coils or something.
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Old 02-21-2013, 9:15 AM
Lovesick Warrior Lovesick Warrior is offline
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Try searching here too:
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Old 02-23-2013, 11:21 AM
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appagohm appagohm is offline
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The springs on those are pretty low powered already, have never herd of
someone selling a weaker spring to cycle 22 sub sonics, and if you mixed up your sub sonic with regular high velocity you might damage your gun. I know the remington sub sonics cycle sometimes, and the cci cb long subsonics
will never cycle. I had an extra spring for my 22a so i ended up cutting a ring at time until the round could cycles with no luck, i cut to where it might cycle but the gun will not go into battery.

Good luck.

"Gun control is like trying
to reduce drunk driving
by making it tougher for
sober people to own cars"
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Old 02-23-2013, 4:59 PM
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loosewreck loosewreck is offline
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Sounds like a worth while experiment. I look forward to your findings if you try it out.

Good luck OP.
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