[gk23]

i had a ? will a +2 mag extension work on a 10 rd mag or will it only work on the high cap mags example the 13rd glock 23

[ISOM]

To make the gun so the spring will work peroperly everytime get a + 10 % magazine spring. For a 10mm or 45 ACP, it is a +5%.
Wolff Gunsprings Manufactures springs for modern and vintage firearms, guns, hammer, pistols, handguns, revolvers, rifles, shotguns, semiautomatic, accessories, weapons, law enforcement, hunting, shooting, recoil, colt, mainsprings, magazines, IPSC

[Ram Rod]

The original +2 mag extensions will only work on non-drop free hi-cap magazines. Most vendors won't tell you this up front. It's a buyer beware world out there. Do your research.....the internet is your friend, and don't let that hard earned money burn a hole in your pocket for something you cannot use.