This is the 24 round extended Glock factory 9mm Gen 5 magazine for Glock 9mm pistols and compatible rifles.
Gen 5 magazines have subtle geometry improvements and a more securely locking baseplate for Gen 5 Glock models.
The magazine features the standard Glock magazine full length steel inner frame incased in tough polymer with rear facing witness holes for round counting.
Please note: will not fit earlier generation Glocks e.g. Gen 2, Gen 3 and Gen 4.