The FX22 Barreled Action, the perfect start to your next 22LR build. The FX22 receiver is constructed of 6061-T6 Aluminum and is finished with a Black Hardcoat Anodize for long-lasting durability. The integrated 0-MOA 1913 Picatinny Rail makes it easy to mount your favorite optics and accessories. The FX22 bolt is made of 17-4 Stainless Steel, and the firing pin profile is round for reliable ignition. The TandemkrossA(R) Spartan Skeletonized Charging Handle allows for quick and easy charging. Ready for your desired trigger group and stock/chassis of choice. Barrel length and profile: 10.5" or 16" Medium Fluted Barrel Material: 416-R Stainless Barre Mfg: Faxon Firearms