The butt end is called the recoil pad. The 20ga can be adjusted from 13" to 14.5" after you remove the kick ease with the piece that replaces it and the spacers. So 13" 13.5 14 14.5 on 20ga. I would think 12ga is the same.Also adjustable for right hand or left hand shooters. Great guns I highly recommend. Good video!
I'm swapping out the original A300 Patrol stock for a Mesa Tactical. What size type driver? I'm assuming Phillips, small to medium. Don't want to destroy the pad. Thanks!