CMMG LW .22 Upper

[Walkalong]

I recently put together a Pink (Hello Kitty) AR for my wife using a CMMG LW upper. We went out and shot it today.

For the first 5 or 6 mags (fifteen rounders) it would catch an empty case once in a while and end up jammed with a new round partially chambered but held back by the empty case caught in the action.

I took out the "action" and noticed that the extractor was a bit tight and the spring did not always push it back completely when pulled outwards. I figured I would polish the sides later and get it moving better.

I put it back together and for the next 250 plus rounds it never malfunctioned again. Hmm, breaking in? Extractor loosen up? Something else?

Anyway, it never happened again and she shot the rest of the ammo we brought. A full box of 325 Federal Auto Match rounds plus about another 1/4 of a box.

She annihilated 20 clay pigeons, plus all the fragments, and then bounced a Vienna sausage can around the berm at 30 yards. At 30 yards all I had to do was go left 6 clicks on the scope and it was dead on. We sighted it in on a steel plate painted white.

All in all the CMMG upper ran very well, and outstandingly once the failures to eject properly stopped. It never did not feed the next round. It only stopped when it caught a case. Accuracy was very good. She is very happy with it and had a great time.

Two thumbs up for CMMG.

 

[jr_roosa]

I'm getting one of those for my kid. Good to hear it works well. She is tiny, and the LOP on most .22s is too long for her, but an M4 stock completely collapsed fits her perfectly. She would also not shoot enough to make a cricket worthwhile, and I would shoot a .22 upper a ton.

It would be nice if it was easier to single load. She's not old enough to have a repeater.

-J.

 

[Walkalong]

Several mags loaded with only one round? Keep them rotating. Easy to load too.

 

[jr_roosa]

There's no bolt hold open on the CMMG, right?

We are just doing basic intro to marksmanship, so shoot one, go take a look at the target, reload, repeat...I can't see us doing more than ten or twenty shots at a session.

I'll figure something out.

-J.

 

[wally]

There's no bolt hold open on the CMMG, right?

The "normal" mags don't activate the bolt hold open in the lower. They sell a more expensive magazine and a gizmo to fit your lower to activate the bolt hold open.

Never seemed worthwhile to me as after the last shot the bolt "hangs" on the magazine follower making it clear you are empty (especially the mags with the red or green followers). Of course the bolt slams forward when you remove the empty magazine.

 

[Walkalong]

The Black Dog mags we were using all locked (Well, held it back until removed) the bolt back.

She mostly this 15 rounder, but she also went through a couple of mag fulls of the easy load 32 rounders.

I hope they start making an easy load 15 or 20 round mag soon.

 

[wally]

I hope they start making an easy load 15 or 20 round mag soon.

When .22lr ammo was cheap and plentiful we used to run 5-600 rounds a week through our various AR 22 and SIG522. This inexpensive tool made it easy to keep them fed:

http://www.midwayusa.com/product/86...-loader-for-black-dog-ar-15-rimfire-magazines

 

[Walkalong]

I'll have to add one to the next order and try it out. Thanks.