This is a Amend2 Magazine chambered in 9MM, model AM4A2GLOCK17BLK.
This Amend2 18-round magazine is designed for use in the GLOCK 17 and is a sturdy" reliable 9mm magazine made of advanced polymer material. It is a light" durable and excellent alternative to the standard GLOCK(R) OEM magazine.
Features:
Impact Resistant Polymer
Heavy Duty Non-Corrosive Spring
Made in the USA