CMMG Sorry! (sorry i have already posted this but the title wasnt very good so ill try it like this) I was looking at CMMG for my first AR-15, I would like a full length 5.56 barrel, I have no practical need for anything shorter and I like the extra velocity. I was thinking 1/7 twist so I could shoot heavier but I would also like to plink cheaper stuff. Does anyone have experience with CMMG? And what lowers fit well with a CMMG upper? Also I saw a few full-length rifles with CAR and mid-length gas systems, how does a shorter gas system help? Thanks for the help
CMME 1/7? or should i go with 1/9 twist?
- Thread starter futureranger
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a shorter gas system will only help if you have a shorter barrel. here's the guidelines:
carbine gas for 16" or a bit less, midlength for 16-18", and rifle length for 20". as for CMMG, I have their 18" midlength rifle and couldn't be happier. finish is perfect, shoots FAR more accurately than I can, and everything fits and runs perfectly. I've only gotten about a thousand rounds out the pipe so far, but not one malfunction of any kind. my barrel is 1:8" and loves 75gr match bullets. 1:7" will be fine too. good luck!
carbine gas for 16" or a bit less, midlength for 16-18", and rifle length for 20". as for CMMG, I have their 18" midlength rifle and couldn't be happier. finish is perfect, shoots FAR more accurately than I can, and everything fits and runs perfectly. I've only gotten about a thousand rounds out the pipe so far, but not one malfunction of any kind. my barrel is 1:8" and loves 75gr match bullets. 1:7" will be fine too. good luck!
W.E.G.
Member
A lotta arfcom'rs have a major hard-on for CMMG's allegedly-lousy customer service.
Go over there and read about it.
Go over there and read about it.
If you get a 20 inch rifle length, a longer rifle gas system length will work better. It'll be softer on recoil and less harsh on parts.
I have a 16 inch CMMG medium contour barrel with mid length gas. It shoots great. Their customer service does not have a great reputation, but their product is very nice.
I have the 1/7 and can shoot 55 grain all day long. It's good for pop cans at 100 yards off hand out of a 16 inch barrel. If I had a scope and a free float I could probably get accuracy down to an inch or two at 100 yards.
I have a 16 inch CMMG medium contour barrel with mid length gas. It shoots great. Their customer service does not have a great reputation, but their product is very nice.
I have the 1/7 and can shoot 55 grain all day long. It's good for pop cans at 100 yards off hand out of a 16 inch barrel. If I had a scope and a free float I could probably get accuracy down to an inch or two at 100 yards.
sarduy
Member
One Happy CMMG owner here 
My CMMG M4 shoot all kind of 5.56/223 ammo that you think of, expecially wolf, it's a 1/7 so you can use heavier bullets but it shoot 55gr very accurate like others 1/9 that i have shot about 2 moas with iron-sight at 100 yards.
any lower will fit a CMMG upper, i wound recommend a CMMG lower ot match the fit and finish, but i use a Spike's Tactical Lower (i love it) they match perfect and there is no woobles at all, (a good tight fit) i also used a CMMG LPK to go with the lower.
My CMMG M4 shoot all kind of 5.56/223 ammo that you think of, expecially wolf, it's a 1/7 so you can use heavier bullets but it shoot 55gr very accurate like others 1/9 that i have shot about 2 moas with iron-sight at 100 yards.
any lower will fit a CMMG upper, i wound recommend a CMMG lower ot match the fit and finish, but i use a Spike's Tactical Lower (i love it) they match perfect and there is no woobles at all, (a good tight fit) i also used a CMMG LPK to go with the lower.
rbernie
Contributing Member
I have four CMMG barrels, in both rifle and 16" middie form. All are 1:7" twist.
They all shoot very accurately with both my 75gr OTM ammo as well as standard M193/55gr ammo.
I think very highly of the CMMG componentry.
They all shoot very accurately with both my 75gr OTM ammo as well as standard M193/55gr ammo.
I think very highly of the CMMG componentry.
I have had only excellent customer service from CMMG!
No problems with their products, either.
Bob
No problems with their products, either.
Bob
The problem with CMMG is that demand is exceeding personel. Its just a handful of folks building lots of rifles and getting them out the door. Unfortunately customer service and delivery times suffer.
They make a great product IMO, and if you do have a problem, they will make it right, maybe later rather than sooner.
Mine runs great. I havent shot anything lighter than 55gr pills through it though (except for some 36gr? rimfire, which didnt shoot very well), but its still shoots better than I do. It does prefer the 75 and 77gr stuff, but does pretty well with 55 grain depending on how well I do my part.
They make a great product IMO, and if you do have a problem, they will make it right, maybe later rather than sooner.
Mine runs great. I havent shot anything lighter than 55gr pills through it though (except for some 36gr? rimfire, which didnt shoot very well), but its still shoots better than I do. It does prefer the 75 and 77gr stuff, but does pretty well with 55 grain depending on how well I do my part.
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