Description
This magazine extension is made specifically for the Sig Sauer P320 21 round magazines to fit the USPSA 141.25mm magazine gauge.
factory follower from 21-22
rune follower rt11 23 reloadable maybe 24 depending on set-up.
rt13 will be 23 reloadable but longer life.
The extension can also be used with 15 or 17 round magazines, and will fit inside the carry magazine well found on the Sig Sauer AXG PRO.
Our extension is machined from 6061-T6 aluminum and anodized. We offer them in black, red, blue and silver. When used with the factory follower and spring, the factory locking plate must be removed and not used. We use a spring-loaded detent to secure it to the magazine. It makes it super easy to take it on / off for magazine cleaning, and it is 100% secured. The detent is made from stainless steel and finished in Black Nitride for long life.
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