[ARCHIVED THREAD] - 9mm RRA Problems

Posted: 1/11/2008 11:15:33 AM EDT

I've got the following setup:

Bushmaster SBR-registered Lower with:
- Hahn Permanent Mag Block
- 9mm Buffer
- RRA 6-pos stock
- DPMS rounded hammer

RRA 10.5" Upper with
- 15 degree bolt ramping

Mags
- Colt & CProducts

-----

Problem - rounds are not ejecting consistently. They are being extracted but not ejected creating jams when the extracted round and the next round stripped from the mag both meet as the bolt goes forward.

Solution - From my research hear it looks like I should start with a roll pin and extractor replacement. Can anyone recommend where I get the roll pin and what it's specs are?

BTW - Are there any online sources for a 9mm AR manual, in particular bolt disassembly?

THX!

Posted: 1/11/2008 12:02:32 PM EDT

[#1]

I got a roll pin at the hardware store. I think it was 1/8" X 1/2". If you get one that's too long just grind it down. That fixed my problems.

Posted: 1/11/2008 1:09:09 PM EDT

[#2]

Quoted:
Solution - From my research hear it looks like I should start with a roll pin and extractor replacement.

Are you sure your ejector doesn't need tuning? You said they're extracting fine, but not ejecting. I'd look into an ejector problem.

Posted: 1/11/2008 1:29:24 PM EDT

[#3]

Hmmmm, 9mm wont eject - both these is here on the first page of the forum..

Mirror topic #1

Mirror topic #2 -- read this one first, nice pics to help you along.

[ARCHIVED THREAD] - 9mm RRA Problems

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[ARCHIVED THREAD] - 9mm RRA Problems

[ARCHIVED THREAD] - 9mm RRA Problems