Updated to current specs

[Basil_Moulds]

Well ive had my Mp 15 22 since January. Ive had very few problems with allmost no ftf with the aguila ammunition I use. I plan on switching to fedral ammo and I was wondering if its worth it to send it in and get it updated to current specs.

The first 3 of the serial is DTU

 

[chuck s]

S&W will repair your rifle at no cost to you. No shipping charges. No repair problems. There's no preventive maintenance program I'm aware of. Have a problem? They'll take it back. They can't fix things that ain't broken.

Mine went thru just over 300 rounds with only a few failures to feed, then experienced an out of battery discharge. This was back in December. DTM-serial.

Rifle was updated to whatever "latest spec" was vogue then and returned in less than two weeks. Has over 1000 trouble free rounds since then. Functioning has been too good to even comment after every range session -- the lil carbine has become positively boring. And positively accurate chasing shot shells around the range.

I did the "15 Minute AR15 Trigger Job" on the rifle. Cut off the right leg of the hammer spring, reformed the trigger spring. 100% reliable ignition.

I also polished the feed ramp and aggressively polished the chamber. Anything that prevents complete chambering of a .22LR round will result in an OOB discharge because the extractor holds the cartridge against the bolt face.

Oh, yeah, I'm shooting Winchester 333 bulk.

-- Chuck

 

[tatwell]

S&W will repair your rifle at no cost to you. No shipping charges. No repair problems. There's no preventive maintenance program I'm aware of. Have a problem? They'll take it back. They can't fix things that ain't broken.

Mine went thru just over 300 rounds with only a few failures to feed, then experienced an out of battery discharge. This was back in December. DTM-serial.

Rifle was updated to whatever "latest spec" was vogue then and returned in less than two weeks. Has over 1000 trouble free rounds since then. Functioning has been too good to even comment after every range session -- the lil carbine has become positively boring. And positively accurate chasing shot shells around the range.

I did the "15 Minute AR15 Trigger Job" on the rifle. Cut off the right leg of the hammer spring, reformed the trigger spring. 100% reliable ignition.

I also polished the feed ramp and aggressively polished the chamber. Anything that prevents complete chambering of a .22LR round will result in an OOB discharge because the extractor holds the cartridge against the bolt face.

Oh, yeah, I'm shooting Winchester 333 bulk.


-- Chuck

I firmly believe that what you did may well be the thing that will prevent the OOB's. Especially polishing the chamber. That seemed to help the TC R-55's. I would bet that is one of the things that S&W does in the update they do. For my information, what did you use to polish the chamber? I read that others had used Flitz, and that some had used a mixture of a fine compound and oil on a chamber brush spun by a drill.Thanks, Terry

 

[chuck s]

Terry --

While I'm sure this will upset the bench-rest shooters, I aggressively polished the chamber with a JB bore paste on a cleaning patch spun with my hand drill. No measurements, just several seconds of spin while sliding the patch and paste in and out.

The intent was to polish and perhaps remove a ten-thousandth or two of material to loosen it all up. If this upset the "match" quality of the chamber I'm not concerned as I don't shoot match ammo anyway.

But note several folks (here) have reliable chambering without this additional work.

Seems to work well for my bulk Winchester 333.

-- Chuck

 

[tatwell]

Thanks Chuck, I've heard about using JB before. Thanks for the info.