i have a sbr in 9mm , has the hk 3 lug barrel , hk bolt and carrier. comes with 8 straight hk marked 30 rd mags and 2 hk law enforcment only curved 30 rd mags. this was or is a sw5 receiver .also comes with a case for traveling . would like to sell for 2000.00 you need to pay the fee for the transfer. have pics , no tire kickers. this is not a safe queen may need a paint job!