Converting Glock magazines from 10 rounds to high capacity?

[Bruce in WV]

Simple question: How do I convert a Glock OEM 10 round magazine to high capacity? ...and conversely, convert a high capacity magazine into 10 rounds (other than only put 10 rounds in it)?

Found the answer: https://www.glocktalk.com/threads/glock-17-34-10-round-mags.1777118/

[T2C]

I wouldn't bother with converting 10 round magazines to higher capacity. I would sell them to people in states with magazine capacity restrictions.

If your state laws prohibit magazines that hold more than 10 rounds, I would not convert them nor buy higher capacity magazines.

[titsonritz]

You don't.

[T2C]

You don't.

Your response was more eloquent and straight to the point than mine.

[robbins290]

I just looked this up last night as I just bought a G20 with 10 round mags. It was easier for me to order some 15 rounders then convert the 10 rounders. Keep them for range use.

[ViniVidivici]

You can't.

I've got a couple 10 rounders, they have ridges in the side of the mag body (the metal lining) that serve to narrow the inside. No way to press those flat.

I just use 'em for training mags.

ETA: it is possible to increase capacity by one round, by putting an extended base plate on. Did that with a G19 10 rounder, ran fine.

Did it with a cheap Scherer I had on hand...would never waste a good factory +2 on a crap mag.

[GNXII]

I gotta ask why? No standard capacity mags in you AOR?

[meausoc]

I put a plus 2 extender on a 10 round 10mm Model 20 magazine that someone had given me. It now holds 12 rounds. Also had a friend dremel the ridges in a 10 round G17 magazine. It was very time consuming but can be done. It now holds 17 rounds.

[markm]

Yeah.. too much trouble. I don't like the mag extenders... I've never trusted the change in mag spring tension.

[BoringGuy45]

Buy standard capacity mags.