Cut down 18" barrel?

**cb805** · 02-23-17, 23:00

Could I theoretically cut my 18 down to a 16 and keep the gas port the same size? It's a CMMG 18" ar10 308 barrel with a full length gas system. Thanks

Edit- I'm also wondering if I would be better off selling this upper and buying a factory 16? Not sure what this one is worth..

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**Smokin338** · 02-24-17, 00:00

Personally for the price of it all... I would just pull the barrel, sell it and buy what you want.

**mitchellram1500** · 02-24-17, 05:27

Originally Posted by Smokin338

Personally for the price of it all... I would just pull the barrel, sell it and buy what you want.

Yea I agree. Just take it off, sell it and get your desired length

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**Junkie** · 02-24-17, 12:34

When you say "full length" I assume you mean rifle length. It's tricky to get a 16" 5.56 barrel to work with a rifle length gas system (can be done, but it cares more about what ammo you feed it vs midlength). I suspect the same is true with 308, but don't have any personal experience with it.

I'd be surprised if it worked well without touching the gas port.

**cb805** · 02-24-17, 12:51

Thanks for the help guys. I think since it sounds like it will be easier just to change the barrel and I was planning on getting a different hand guard I'll just sell this upper as I was originally planning on. Anyone interested in it?

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