Franklin armory's 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 f17-x 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 1/2"-28 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 stop/indexing point and is m-lok compatible.Action: Semi-AutoCaliber: 17 WSMBarrel Length: 16"Capacity: 10+1Trigger: Custom TunedSafety: Manual ThumbOal: 34.25"Weight: 9.90 lbsStock Description: Adjustable B5 BravoTwist: 1:9"Barrel Description: PrecisionMuzzle: Aura Muzzle BrakeReceiver Material: AluminumSights: Optic ReadyBarrel Length Range: 16" to 16.99"Weight Range: 9 lbs to 9.99 lbsStock Finish Group: Black