ak4dThe second AK4D with the optimized PA ACSS reticle based on a PTR 91. PTR 91 build iron shts to 500 yards PTR DMR rifle ETA: This thread started out as the title indicates,Why the G3, and how? we will take a look at a clone of a Norwegian AG3F2 and a sort-of clone of a Swedish AK4D with its Spuhr stock and handguard. Share this: Click