The Amend2 34 round magazine is designed for use in GLOCKA(R) pattern firearms and is a sturdy reliable 9x19MM magazine made of advance polymer material. It is a light durable and excellent alternative to the standard Glock OEM magazine. This magazine has Amend2's unique baseplate to truly make it one of a kind.Features: Sturdy Impact resistance polymer for increased strength Heavy duty non-memory and non-corrosive spring Made in the U.S.A.