Amend2 Firearms A2GLOCK17BLK: This magazine from Amend2 is a light, durable and excellent alternative to the standard Glock OEM magazine. Made of Impact resistance polymer for increased strength, with a heavy duty, non-memory and non-corrosive spring, it is sturdy and reliable. Amend2\'s unique baseplate truly makes it one of a kind. Made in the U.S.A. This 9mm model is compatible with Glock 17 and has an 18-round capacity.