Single piece fiber reinforced injection molded polymer upper and lower receiver body

Fully licensed authentic Hk trademarks by Umarex (UMP 45 Model)

Hk MP5-style forward charging handle assembly with AR-style bolt lock and paddle bolt release

AR-Style ambidextrous controls with Hk style 2-Round Burst Trigger Group configuration

Ambidextrous paddle style mag release

Dual flip rear peep sight and front open style aperture, with adjustable windage and elevation

Foldable stock to reduce overall length by 10 inches

Authentic replication of internal metal hammer assembly and internal firing pin and block, with polymer fire selector group