RedNeck Jim
Member
Why would you WANT a SBR to begin with? I can find all kinds of articles about how to do it but why would one do it? What's the point?
All sorts of reasons. You will always have folks do things simply because they can. Then you will have folks doing so because it looks cool. Then you will have folks that do so for a specific reason. Could be they need the short rifle for concealment issues. I personally go SBR on my 15-22 & AR due to the fact I shoot suppressed. The extra length & weight of the suppressor is a bit bothersome to me, so I prefer shorter barrels. My 300 Blackout barrel is 9" long & my 15-22 is 11". This brings both guns, with suppressors attached, back to carbine length, which I prefer.
Barrel length has little to do with accuracy but everything to do with velocity. From what I understand, the 5.56 round needs 20" of barrel length to get to maximum velocity while the 300 Blackout only needs 9". So with a Blackout, all that extra barrel length adds mostly nothing but weight. With a 15-22, if you cut the barrel to 4.5", that reduces the velocity enough that high velocity ammo stays subsonic. That is a big reason for going SBR on a 15-22... especially when shooting suppressed.