The META Tactical APEX-Series Carbine Conversion Kit is the worlds first pistol to rifle bullpup style conversion kit allowing you to shoot your pistol further and more accurately than ever before with the most responsive and compact platform ever created. Designed, developed, and tested to be the most versatile and innovative conversion kit on the market while complying with all laws and regulations. Product Features: PROUDLY MADE IN THE U.S.A., Bullpup design allowing for rapid target acquisition in a compact rifle platform, 16 drop-in replacement barrel, Lightweight at just 3.25lbs + weight of stock firearm (1.5lbs average, unloaded), Ambidextrous design with shell deflector, ambi mag-release, and ambi non-reciprocating charging handle, Supports suppressor height sights, Compatible with most aftermarket slides as well as optics ready/optics cut slides (without optic mounted), Built-in cheek rest allowing for a consistent cheek weld, Compatible with most AR15 flat-top A2 style grips, 6-position adjustable stock, M-LOK accessory system on handguard with a NATO picatinny top rail.