Like it says.... I purchased the Camo AR-10, comes with one 5rd mag. The gun runs fine with my other Magpul mags, but the mag that came with the gun, when loaded with 5 rounds has a tendency to have the follower hang up on the inverted notches stamped into the sides of the mag to prevent more than 5rds being loaded. I can load the mag fine, but when I either give the mag a slap on the side to line up the rounds or slap the bottom of the mag into the lower, the mag follower gets stuck on those notches. The problem is the spring looses it's pressure on the follower and the rounds have nothing to push them up and hold them in the mag... hope I explained it right..