The Shield Arms DS20 Combo is a starter kit that gives you everything needed to run the DS-Series in a Gen 3 Glock 17. The kit includes three DS20 steel magazines in 9MM, so you have several loaded magazines ready from the start. Each magazine holds 20 rounds, three more than a factory magazine, which gives you three extra rounds before a reload. One steel mag catch is also included, and it is the catch DS-Series magazines are designed to run with, so the magazines and catch work as a matched set.

Each magazine has a stamped over-insertion stop that limits how far it seats in the Glock 17. The magazines are steel with a black nitride finish. The included catch is a standard steel Generation 3 magazine catch, so it matches the Gen 3 frame the kit is built for. Shield Arms backs the kit with a lifetime warranty.

• Brand: Shield Arms
• Model: DS20 Combo
• Caliber: 9MM
• Capacity: 20 Rds (3x DS20 Steel Magazine Included)
• Fit: Gen 3 Glock 17
• Included Accessory: (1) Steel Mag Catch
• Finish: Nitride, Black
• Part Number: DS20-C1-GEN3