SYLVAN GLOCK CONVERSION BLOCK BLK

Sylvan Arms Glock Conversion Block, Black GCB100

Converting your standard mil spec AR lower to a 9mm lower is easy with the 9mm conversion block. Insert the conversion block into the magazine well of your standard AR lower and combined with most 9mm AR uppers you have a pistol caliber carbine. The trigger style magazine release makes removing the magazine with one hand easy.