Thanks for the front and rear support, the SR5000 Modular Gun Vise will accept every kind of long gun, from a short AR15 rifle to a bench rest rifle. The adjustable front and rear clamp, which feature rubber inserts to protect your stock and barrel, will fit large and small stocks. Both clamps can be bi-directionally adjusted for a better alignment of the gun on the vise in case of specific operations you might need to do. The best stability is guaranteed by 10 anti-slip rubber feet placed on the base. One of the greatest features is that you will be able to adjust the two modular ends included on 6 different positions on the gun vise"s body. Depending on the room you have or the operations you are doing on your guns, you might need to place the modular ends on different positions. The modular ends can be easily and quickly interchanged from the different available positions on the body without using a screw or a tool. Our tight mold manufacturing allowed us to make your life easier by avoiding to use any tool when you assemble or dissassemble the modular ends. The body is made of hard and durable plastic, resistant to chemicals and solvents and features molded accessories and cans" bins.