Anarchy Outdoors is excited to bring direct from Area 419, the New American Rifle Company +4 Magazine extension which in our opinion tare the only correctly made extensions on the market. Other magazine extensions on the market are simply rectangular blocks. If you look at your magazine, the bottom is angled, so when you attach competitors extensions it is not parallel with the column of cartridges in the magazine. This probably works fine for +2 rounds, but it would not work for much if any more. We decided to do it right, and cut the attachment rail at an angle to the pocket in the mag. This means that the column of rounds travels straight down into the extension. This took extra time on the mill and a 4th axis, but it was worth it to deliver to you the most advanced product of its kind.
These particular mag extensions on this page were designed for the American Rifle Company 10-Round magazines and work excellent with them. Easy to install, provides great performance, and the quality you expect from Area 419.
Note: AICS and Accurate magazines WILL fit onto the extension. However, we realized that the followers fit a little bit too tight. It is a rather simple modification to file some material off of the back ears of the follower so that it will fit. (This is only for AICS/Accurate) We made the changes necessary to make these universal fitment for ARC/AICS/Accurate, and those will be listed separately and available in the coming weeks. We are selling these at a reduced price until they are gone so to avoid confusion in the future. Don't worry though, these still work 100% fine with ARC mags.