Sylvan Arms GcB100 AR-15 to 9mm Glock Conversion Block
The Sylvan Arms 9mm Glock Conversion Block is a drop-in fit to give you a 9mm capable lower without resorting to buying a pistol caliber specific option. Designed to install in Mil-Spec lowers almost exactly like a standard rifle magazine.
Note: your jurisdiction may require you to be a licensed FFL or licensed gunsmith to purchase this product.
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– Accepts popular Glock 9mm magazines
– Designed to work with Mil-Spec lowers
– Machined from black oxide steel and 6061-T6 aluminum
– Does not include last round bolt hold open
Designed, built and assembled in the USA