The MDT LSS-RF Chassis System for .22LR caliber rifles is lightweight, compact, and adopts the same footprint as the LSS. You will notice a significant improvement in accuracy due to the V-shaped bedding and free floated forend, which allows for barrel contours up to 1" in diameter. The chassis system is manufactured out of billet 6061-T6 aluminum, and has been finished with Cerakote in Black or Flat Dark Earth (FDE). To keep this chassis system compact, MDT has designed it to take carbine AR-15 buttstocks. Fixed buttstocks can also be mounted with the use of a fixed stock adapter. The LSS-RF uses the factory magazine, and each chassis is compatible with all factory barrel contours. Given that the buttstock interface has been lowered, the Savage Mark II, CZ 455 and Ruger American can use iron sights with this chassis. If you are using a scope, it is recommended that you use a stock with a cheek riser.