IWA ML37 Flip UP sight, HK style stock, Can detach from its chassis and mount underneath your rifle with a picatiny rail, $1400 or trade for guns, ammo, silver, optics, Dirt bike, utility trailer, ATV anything else of value, Call or text Ron at 772-205-1847 Use the phone, FGT email is not the best for a quick response, Thanks for looking and check out my other listings, Located in Vero and willing to travel for the right deal.