The Foundation Series built on the same frames as all Shadow Systems pistols touts sleek ergonomics real-world shootability and reliability. Features wrap around texture with interchangable backstraps; slide with pocket cut serrations; optic cut allowing for direct mount of most major optic brands; steel sights with black serrated rear and white dot front; affords lower 1/3 co-witness with most optics; rifled match grade nitride barrel for +P ammo; Carbon steel guide rod and a drop-safe polymer trigger. Fits Glock 19/19X Gen4 holsters. Includes two Magpul magazines and three interchangeable backstraps.