The GLOCK plus magazine extension is compatible on double stack STANDARD CAPACITY magazines for 9, .40, .357 SIG & 45 GAP caliber GLOCK models.
This part includes the necessary insert required to install the extension onto a magazine. Adds 2 rounds on 9mm & .357 Sig magazines and 1 on .40S&W & 45 GAP.
NOT FOR USE WITH GLOCK 43, 43X & 48 MAGAZINES
NOTE: This is a composite item and the inventory may not be reflected correctly on the webiste. Please give our customer service line a call to check inventory before placing an order.