Convert Your AR Lower to 9mm
The Sylvan Arms GCB100 Glock Conversion Block is a straightforward solution for shooters who want to build a 9mm pistol caliber carbine without purchasing a dedicated lower receiver. This drop-in accessory transforms any standard mil-spec AR lower into a functional 9mm platform.
How It Works
Simply insert the conversion block into your AR lower's magazine well. The block accepts standard Glock 17 and Glock 19 magazines, giving you access to affordable, widely available ammunition and magazines. Pair it with any compatible 9mm AR upper, and you have a complete pistol caliber carbine.
Design and Construction
Materials: The GCB100 is machined from 6061-T6 aircraft-grade aluminum, ensuring durability and reliability through extended use.
Magazine Release: The trigger-style magazine release allows one-handed magazine removal—a practical feature for both range work and tactical applications.
Compatibility: Designed to work with standard mil-spec AR lowers and most 9mm AR uppers on the market.
American Made Quality
Sylvan Arms designs, builds, and assembles the GCB100 in the USA. Every unit includes a limited lifetime warranty and is backed by a 100% satisfaction guarantee.
Why Choose 9mm?
A 9mm pistol caliber carbine offers reduced recoil, lower ammunition costs, and excellent accuracy for training, competition, and home defense applications.
Features
- fits glock 19/17 magazine
- aircraft grade 6061 aluminum
- black
