PTR Model PTR 91 G.I. R .308 Winchester/7.62 NATO 18 Inch Match Grade H&K Profile Tapered Barrel Classic H&K Fixed Polymer Stock OD Green 10 Round MA and NJ Compliant. Special Edition green fixed polymer stock, classic H&K green polymer slimline handguard, parkerized finish, metal lower, match grade H&K profile tapered barrel, welded barrel extension, classic H&K metal trigger group housing, delayed blowback Roller-Lock System, paddle mag release. One 10 round magazine.