Originally Posted by
foxx
Assuming it is the correct bolt head (easy to switch-out if not), you will only need the metal "box" of the centerfeed mag and it's spring and follower. (You don't need or want the plastic bottom that attaches to the outside of a detachable mag.) The mag box just sits in the magazine well of the stock. There is also an "L clip" available that secures the mag box to the stock, but it isn't absolutely necessary. You can often get by with just using some plumbers putty, clay or actually bed it into the stock. Check out FAQ section for articles about the different mag styes, and installations.