Introducing the VECTOR Mag Extension a premium upgrade for enhancing the capacity of your Glock magazines for Gen 3 and later models. This model includes an extended baseplate outer sleeve and extended spring made from durable and lightweight reinforced composites delivering robust build quality and innovative materials.The VECTOR Mag Extension is specifically designed for calibers 9mm 10mm and .45ACP and fits seamlessly with standard G17 G20 and G21 magazines. It offers an impressive capacity of up to 40 rounds of 9mm 33 rounds of 10mm and 30 rounds of .45ACP making it an ideal enhancement for your KRISS Vector or Glock handgun as well as any Glock magazine-compatible pistol caliber carbine.Key attributes include the extended baseplate outer sleeve and extended spring providing a substantial capacity increase over traditional Glock magazines accommodating up to 33 rounds for the KRISS Vector Glock 20 and Glock 40. The VECTOR Mag Extension is the ultimate choice for capacity extension combining reliable feeding superior toughness and sleek design in one exclusive package.