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,Download GitHub samples Official product samples on GitHub (the samples reference assemblies from NuGet): Ab4d.SharpEngine.Samples - Ab4d.SharpEngine samples for multiple UI