Area 419 Universal SA Magazine Extension

In our opinion, these are the only correctly manufactured magazine extensions on the market.
Other magazine extensions on the market are simply rectangular blocks. If you look at your magazine, the floor is angled, so that a competitor's magazine extension does not run parallel to the row of cartridges in the magazine once attached. That probably works fine for +2 rounds, but would no longer work – if at all – with significantly more rounds.

We decided to do it right and milled the mounting rail at an angle to the cut-out in the magazine. This means that the row of cartridges runs straight down into the extension. This required additional machining time on the milling machine, and we chose to mill it in a single operation on the 4th axis, but it was worth it in order to be able to deliver the most advanced product of its kind to you. The grooves on the sides offer an excellent gripping point when changing magazines and also help to save some weight.
After we started with the American Rifle Company +4 magazine extension, we realized that with a small revision it could work just as well with AICS and Accurate magazines. The 419 Universal magazine extensions are designed to be compatible with a wide variety of magazines – from the ARC 10-round magazine to AICS 5- or 10-round magazines to Accurate magazines, both with a standard bolt face and with SAUM/WSM magazines (these do not work with 223).

They are NOT COMPATIBLE with AI AW magazines, as these have a fixed/welded floor plate.

Easy installation, outstanding performance and the quality you have come to expect from Area 419.

Expected capacity increase:
ARC 10-round magazines: +4 or +5, depending on cartridge
AICS & Accurate 10-round magazines: +3 or +4, depending on cartridge
AICS & Accurate 5-round magazines: +2 or +3, depending on cartridge
Accurate WSM 3- or 7-round magazines: +3

NOTE: **THESE ARE NOT COMPATIBLE WITH MAGPUL OR OTHER POLYMER AI MAGAZINES**