Has anyone SBR'ed the five seven upper for an AR? when you fill out your form 1 you list the shortest barrel you will use right? I plan on going 10.5 or so on the 5.56 bbl but if I get a fiveseven upper I might go like 6"
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Captain Moroni</div><div class="ubbcode-body">Has anyone SBR'ed the five seven upper for an AR? when you fill out your form 1 you list the shortest barrel you will use right? I plan on going 10.5 or so on the 5.56 bbl but if I get a fiveseven upper I might go like 6" </div></div>
What kind of MV could you expect out of that? Sounds like a good idea. I'd love to see pics