I have here 3 lowers These things are tanks These are great for HPA applications 2x steel G3 steel lowers with polymer grip (surplus) $20 shipped 1x G3 Navy SEF polymer lower (brand new) (would fit mp5 with modification) $60 shipped Screw set included for the steel lowers serious buyers only, PayPal ready, quick shipping with tracking Just got into Daytona guns so this project for me wo t happen. Thanks! Any questions just shoot them over.