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-   -   Cmmg 22 bolt, need a little help (http://www.calguns.net/calgunforum/showthread.php?t=718387)

westsiderippa 03-06-2013 10:39 AM

Cmmg 22 bolt, need a little help
 
Hey guys, I just received my new evolution cmmg upper and I am having some trouble removing the bolt and charging handle. It's factory new has not been mounted or fired yet and I want to remove the bolt and do my normal lubrication etc.... I'm not a newbie and own many ar15's but seriously this bolt will not come out of the back of the receiver. It cycles perfect etc.. What am I missing here.

Thanks Bryan.

westsiderippa 03-06-2013 11:42 AM

Figured it out. Hahaha. First time with a 22 upper. You really gotta pop it off the collar. I'm just used to a 5.56 bolt just simply falling out the back.

BANG BANG 03-06-2013 2:00 PM

Quote:

Originally Posted by westsiderippa (Post 10731472)
Figured it out. Hahaha. First time with a 22 upper. You really gotta pop it off the collar. I'm just used to a 5.56 bolt just simply falling out the back.

and the other way around too, it's a tight fit going in when new, enough that you can have issues getting the rear pin back in

Losd619 03-06-2013 3:18 PM

Normal lubing? You wanna run these cmmg bolts pretty dry or else you will get too much gunk. All you need is one little drop towards the back of the rails on the bolt and you are good to go.

NorCalDustin 03-06-2013 3:46 PM

Quote:

Originally Posted by westsiderippa (Post 10731472)
Figured it out. Hahaha. First time with a 22 upper. You really gotta pop it off the collar. I'm just used to a 5.56 bolt just simply falling out the back.

DO NOT take apart your bolt... Seriously, 9 out of 10 of them that I've seen having function problems have due to people taking the bolt apart and messing up the rails when putting the collar back on.

Just pull the bolt back and clean it that way. No need to take it apart.



Now, to remove the entire BCG from the upper, simply pull backwards on it kind of hard.

NorCalDustin 03-06-2013 3:48 PM

Quote:

Originally Posted by Losd619 (Post 10733140)
Normal lubing? You wanna run these cmmg bolts pretty dry or else you will get too much gunk. All you need is one little drop towards the back of the rails on the bolt and you are good to go.

I recommend grease... It says where you put it, cleans off easy, etc...

JackRydden224 03-06-2013 4:07 PM

Quote:

Originally Posted by NorCalDustin (Post 10733349)
DO NOT take apart your bolt... Seriously, 9 out of 10 of them that I've seen having function problems have due to people taking the bolt apart and messing up the rails when putting the collar back on.

Just pull the bolt back and clean it that way. No need to take it apart.



Now, to remove the entire BCG from the upper, simply pull backwards on it kind of hard.

I learned the hard way on guns. Now I do not take a part anything I am not 120% confident that I can put it back.

shadow65 03-06-2013 5:52 PM

The problem is not putting it back together.
The problem is with bending the rails when you take it apart.
It will never run right after that and you will never get the rails perfectly flat again.
Dave N

westsiderippa 03-06-2013 11:08 PM

Thanks guys I'm not taking the bolt appart. I'm more than confident with my ar15 skills but like you said these little 22's look delicate. I just anted to know all functions first before taking to the range. I thought it was strange how te bolt was so tight on that collar but that's the norm I'm told. Thanks for the advice and I can't wait to fire this little guy.

AR22 03-07-2013 5:23 AM

I had one once that I had to lap the sides of the rails on a piece of sandpaper on a flat surface..Worked great after that ten minute job. You do not want to remove alot from the rail sides just lap a little on both sides at a time till it goes in and out nicely.


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