S&W M&P15-22 polymer frame stripped thread repair - Page 1

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[ARCHIVED THREAD] - S&W M&P15-22 polymer frame stripped thread repair

Posted: 4/21/2020 12:34:41 PM EDT

Hello,

I managed to strip the thread out that holds the pistol grip on and need ideas on some repair ideas.

All I can think of is to put JB weld in the hole and screw the bolt in there coated with a release agent and hope I can get it back out.

Or put JB weld in there and drill and tap it.

Or put a oversized wood or self tapper type screw in there.

Or a helicoil.

What would the hive do?

Btw, never thought I really over tightened it. I swapped triggers out 3 or 4 times, I think I more over used the plastic threads than anything.

Posted: 4/21/2020 1:11:37 PM EDT

[#1]

Quoted:

Or a helicoil.

View Quote

This

Posted: 4/22/2020 11:10:16 AM EDT

[#2]

Quote History

Quoted:
This

View Quote View All Quotes

View All Quotes

Quote History

Quoted:

Quoted:

Or a helicoil.

This

I like the helicoil, it’s the most expensive of what I’ve looked into, though.

Posted: 4/23/2020 3:24:39 PM EDT

[#3]

Retap to a slightly larger screw?

Posted: 4/26/2020 11:57:30 PM EDT

[#4]

Quote History

Quoted:
I like the helicoil, it’s the most expensive of what I’ve looked into, though.

View Quote

But also the least ghetto.

Posted: 4/27/2020 7:19:08 PM EDT

[#5]

Dug this up from the archive here: Helicol install

Posted: 5/1/2020 3:32:51 PM EDT

[#6]

Quote History

Originally Posted By AEnemaBay:

But also the least ghetto.

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Posted: 5/22/2020 11:18:29 AM EDT

[#7]

I ended up using a longer screw, the factory one was a 3/4” long and didn’t look like it catching many threads, I found a 1” long screw with the same thread pitch and used it, it’s holding good, For now.

Posted: 5/22/2020 11:47:02 AM EDT

[#8]

I'm not sure what they're called, but I've used'em before.
They look like a set screw, but the inside is tapped for the final thread. The outside is also threaded, but a larger size. Works on the helicoil principle, but you don't need to buy an entire kit or need special tools. Tap the hole the necessary size and screw the "set screw" insert in. Done.

Posted: 6/17/2020 12:04:51 PM EDT

[#9]

Timesert repair would be ideal.

[ARCHIVED THREAD] - S&W M&P15-22 polymer frame stripped thread repair

Armory » Gunsmithing

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