The Shield Arms Glock 19 Magazine Extension adds 5 rounds to 9mm magazines or 4 rounds to .40 S&W magazines, increasing your G19’s standard capacity to 20 or 19 rounds respectively.
- Caliber: 9mm (+5 rounds) / .40 S&W (+4 rounds)
- Capacity Increase: +5 rounds (9mm), +4 rounds (.40 S&W)
- Compatible Firearms: Glock 19 (Gen 3, 4, 5)
- Material: Billet aluminum
- Finish: Black anodized
- Includes: Extension, replacement spring, installation hardware
