The Shield Arms Magazine Extension adds 5 rounds to factory Glock 17 magazines or 4 rounds to Glock 22 magazines, increasing capacity to 22 rounds (9mm) or 19 rounds (.40 S&W) without sacrificing reliability.
- Part Type: Magazine Extension
- Compatible Firearms: Glock 17 (9mm), Glock 22 (.40 S&W)
- Capacity Increase: +5 rounds (G17), +4 rounds (G22)
- Material: 6061-T6 Aluminum
- Finish: Type III Hard Anodized Gray
- Installation: Drop-In (requires disassembly of factory magazine baseplate)
- Includes: Magazine Extension, Magazine Spring
