SHIELD BASE PLATE FOR GLK 17 +5 BLK

Shield Arms Fits Glock 17/22, +5/+4 Base Plate, Black G17-ME-5-BLK
The Shield Arms Magazine Extension for Glock 17/22/34/35/45 adds 5 rounds to your Glock 17/34/45 magazine, and 4 rounds to your Glock 22/35 magazine.