Area 419 Plus 4 Magazine Extension for ARC, AICS Gold

The Area 419 universal mag extensions are designed to work on a variety of magazines from the ARC 10rd mag to AICS 5 or 10rd and Accurate Mag in either standard bolt face or on SAUM/WSM mags. They are NOT COMPATIBLE with AI AW magazines, as those have a fixed/welded floorplate. Other magazine extensions on the market are simply rectangular blocks. If you look at your magazine the bottom is angled so when you attach a competitors extension, it is not parallel with the column of cartridges in the