BudsGunShop.com - G3 compatibility

I would NOT make cuts in your slide, you could damage your firearm and make it unsafe or tender it useless.
The factory sig p226, P228, mecgar p226, and G3 mags will all work, you should never make permanent modifications to your firearm, unless your a competent gun smith.
These are in stock
mec-gar.com/pistol-magazines/Sig-Sauer/SIG-SAUER-P226-X5
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So are these
mec-gar.com/pistol-magazines/Sig-Sauer/SIG-SAUER-P228-18-High-Cap
So are these, (the G3 factory magazines)
shoptaurus.com/taurus-magazine-g3-9mm-15-rds-358-0021-00

Brandon, I have a G# and have no trouble finding G3 Magazines (also, Sig P226 Magazines work flawlessly in the G3 and G2C/G3C pistols) - https://gun.deals/search/apachesolr_search/725327901501 ----------------- budsgunshop.com/product_info.php/products_id/54266/mec-gar+mgp22618+sig+p226+magazine+18rd+9mm+anti-friction

Brandon, No this magazine is not G3 compatible.