I was thinking about a future pistol build with SLAMFIRE51's conversion, but was thinking about putting a "bumper" of sorts on the back end for comfort. Basically, instead of a pistol rear trunnion, I was thinking of keeping the same trunnion and bolting on what would be about a half inch worth of "stock..."
Would this constitute as a stock and thusly create an SBR?
Attached is a photoshopped picture of what I was thinking of doing. Original image care of 4thIDvet.