Far right is my 6.8 SBR. 12.5" AR15 Performance barrel and bolt,SLR adjustable gas block, Larue Stealth Upper and handguard,Young Chrome NM bolt carrier,LMT lower.Geissele S3G trigger,Surefire FA762K suppressor,
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Far right is my 6.8 SBR. 12.5" AR15 Performance barrel and bolt,SLR adjustable gas block, Larue Stealth Upper and handguard,Young Chrome NM bolt carrier,LMT lower.Geissele S3G trigger,Surefire FA762K suppressor,
You're looking at this backwards. You shouldn't be asking what caliber to build. As long as the lower will accept the magazine, it can be the caliber of any upper you fit to it. Your real question is, what kind of lower should you build? Do you have a lower using a collapsing or folding stock to keep your SBR as short as possible? Do you want to fit it with special or ambidextrous controls? Is there a grip, trigger or stock you need or want?
Focus just on how you want the lower configured. Once it's put together, you can run almost any upper on it you want.
I'd reconsider a 22 upper. Get a cmmg 4.5 inch 22lr barrel, put a rail over it, and put a 22 suppressor on the end. Get a better mag adapter and run smith and wesson m&p15-22 mags. Its a stupidly fun tiny combo.
https://imagizer.imageshack.com/v2/8...923/KvWUWW.jpg
I am asking about the upper because I already have lower configured the way I want it(ambi controls, soomod stock...). I was asking about calibers because thats what I want info about, whether you think kthat is backwards or not. Thanks for contributing to the thread.
In terms of the others thanks for the info.
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