Originally Posted By 45ProCarry: So if you buy one, install a long enough muzzle brake to make 16 inches, have it pinned and welded, you still need to do a form 1 before its even installed into an upper?
No. Only need the form 1 if you DO NOT pin and weld. If pinned and welded then it is GTG.
“Don’t be afraid of them. Remember the Lord, who is great and awesome, and fight for your families, your sons and your daughters, your wives and your homes. -Nehemiah 4:14