Hello & thank you for help with this question.
I have built a couple legal Form 1 AR SBRs for myself in 9mm & .22 LR.in these cases, the SBR & caliber are are not much of an issue with velocity & (in theory) terminal ballistics.
I've been considering making another legal AR SBR, but have read about loss of velocity & muzzle blast issues with 5.56 NATO SBRs. Please note that I DO NOT own the SBR barrel, and haven't decided on a legnth. I do have a Gemtech G5 bi-lock I can use on an SBR. I do notice quite a POI shift with this set up, and won't if anyone has ideas to minimize this problem?
My question: for those with 5.56 SBRs--do you find the blast or ballistics unpleasant & regret your purchase? Do you use a can every time you shoot it? I'm considering contacting a FFL 02/07 to just make an SBR with integral can, is why I ask this question. I realize I would have a dedicated lower engraved, but already have one for my 9mm.
Thank you for the help.
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