r/canadaguns • u/No_Holiday_7445 • Jun 02 '26

Fix my gun Derya TM22 screw

I got the new Derya TM22 pro and after the first cleaning the middle top screw is very loose and doesn’t go all the way in.

It was pretty firm first time I opened it and now it is very loose. Should I change the screw or anything else?

8 Upvotes

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10

u/jrage905 Jun 02 '26

Check any other screws you removed. Sounds like you swapped screws without noticing. I believe most are the same but one or two of them are SLIGHTLY different lengths.

7

u/No_Holiday_7445 Jun 02 '26

There are three screws on top and each has a different length. Smaller one fasten the hand guard, middle length is in the middle and tallest one is the closest to the stock, I think I got the right….

2

u/Boring_Name1 Jun 02 '26

That's the right order

1

u/M3NUTN Jun 02 '26

Is something jammed in the bolt hole causing it to not thread in properly?

Check that threads aren't stripped

2

u/No_Holiday_7445 Jun 02 '26

I think the threads are stripped since something came out with the screw itself

2

u/No_Holiday_7445 Jun 02 '26

If I take out the top rail and only screw the screw itself, then it fastens no problem, any idea?

1

u/M3NUTN Jun 02 '26

Because I can't see it I'm just spit balling here. If the bolt does screw in fine without the upper section on; it sounds like the bolt or hole in the receiver have some stripped threads where it would need to engage when the top portion is assembled.

Check the hole for metal shavings on the receiver, and check the threads on the bolt to see if anything is deformed.

2

u/Spydude84 Jun 03 '26

Sounds stripped, helicoil time.

I stripped the threads out of my handguard and no matter how much I turned the screw it wouldn't get tight.

Installed a helicoil and it works great now.

1

u/No_Holiday_7445 Jun 03 '26

If it was stripped, I think without top rail also it wouldn’t get tight, right? It works fine without that top rail, I think the screw is just a bit shorter than what it should be

2

u/Spydude84 Jun 03 '26

When you remove the rail, the screw goes deeper into non-stripped threads I'm guessing?

1

u/No_Holiday_7445 Jun 03 '26

Make sense….

1

u/brianwsch Jun 03 '26

What size of helicoil kit did everyone get?

0

u/Hot_Cheesecake_905 Jun 02 '26 edited Jun 02 '26

I've avoided cleaning my TM22 because I heard the screw threads are very soft at the top.

If the threads are indeed stripped, you can consider get heli-coils (helical screw inserts) to reinforce the holes.

You can also try some threadlocker too.