Originally Posted by
Warhawk
I built a Foxtrot Mike (FM Products) 9mm carbine. Mine is 16" and takes Glock magazines. Despite the warning from FM that Winchester White Box would cause problems, I tried some. At 50 yards it was putting everything inside a 2 inch circle. I've also shot a variety of other ammo, and nothing shoots as well as the WWB. I did have some failures to feed using Israeli IAI die cut hollow points. They would apparently hang up on the chamber mount. This ammo has a very sharp jagged edge to the hollow point. Not a big deal to avoid that ammo.