Ultradyne UD3 Picatinny Ruger American Rifle Chassis Short Action Right Hand OD Green. We replaced the traditional buffer-tube interface with a robust rear Picatinny mounting point so your butt stock detaches quickly for compact transport or tight storage without compromising repeatable return-to-zero. Ergonomics were a primary focus in our design. The chassis accepts an adjustable grip so shooters can customize trigger-finger distance to their preference and the adjustable thumb rest lets you tune positioning for repeatability and comfort. Functionally the Picatinny Chassis keeps compatibility with mil-spec AR grips accepts detachable AICS magazines and retains the integrated ARCA rail along the forend with M-LOK slots for accessories. A forward spigot location gives optional ARCA length extension and a NV bridge mount provides a clip-on thermal/optic interface. The result: a chassis thats transportable configurable and purpose-built for precision. Specifications for Ultradyne UD3 Picatinny Ruger American Rifle Chassis: Manufacturer: Ultradyne Finish: Cerakote Chassis Material: 6061-T6 Aluminum Gun Make: Ruger Gun Model: Ruger American Rifle Action Length: Short Action Hand: Right Gun Rail: M-LOK Length: 16.5 in Features of Ultradyne UD3 Picatinny Ruger American Rifle Chassis Butt Stock Interface: 1913 Picatinny Grip Interface: Mil Spec A2 and UD Adjustable Magazine Interface: AICS 4. Max Barrel Diameter: 1.35" Forend: Integrated ARCA Rail and MLOK Adjustable Thumb Rest Slots Package Contents: Ultradyne UD3 Picatinny Ruger American Rifle Chassis Installation Hardware Included What firearm models does the manufacturer say Ultradyne UD3 Picatinny Ruger American Rifle Chassis is compatible with? The manufacturer suggests that Ultradyne UD3 Picatinny Ruger American Rifle Chassis is compatible with Ruger American RifleUltradyne UD20163-OG: UD3 Picatinny Ruger American Rifle Chassis Short Action Right Hand OD Green