I won a Savage Mark II .22 at a benefit auction last weekend. i have done some research on the rifle . It appears to have had some customizing done to the gun. Its been placed into an Aluminum Chassis that is unbranded as far as i can tell. The adjustable butt stock appears to be a Mission First Tactical brand . under the barrel is something im not familiair with ( see attached Pictures ) any help identifying and valuing this Rig would be greatly appreciated.