Franklin Armorys first piston driven rimfire platform chambered in .17 Winchester Super Magnum. It provides a cleaner and flatter shooting solution for all kinds of pest control. The F17X R2 Osprey Defense slim piston system automatically adjusts for suppressed or unsuppressed use no adjustments needed. This pairs for use with the 20 barrel threaded in the common 1228 tpi with compatible suppressors. features an optic ready receiver standard charging handle custome tuned trigger low profile gas block 15 handguard features an integrated barrier stopindexing point and is MLOK compatible.