The Strike Industries GEN5 Magwell for GLOCK G19 was designed to provide easier reloading of the magazine while adding SI styling. With the added front lip of the magwell, this SI magwell gives improved grip support. Keeping to the slender factory design of the pistol grip, the benefit of adding a funnel-like magwell to help prevent the dreaded reload bobble outweighs the added material of this SI G5 Magwell. Compatible with most aftermarket magazine base plates and extensions and especially with the SI Extended Magazine Plate (EMP) for Glock 19.