For more Info on each project and a larger look just click the picture Zastava PAP conversion. Zastava PAP Conversion Zastava PAP Convert Zastava PAP Converison Muzzle Break on 300 win. SKS Barrel Chop SKS Barrel Cut M&P15-17Mach2 S&W M&P15-22 rebarreled in 17 Mach 2 Kel-Tec SU16 .300Blackout Conversion Final Su16 300blkout video. Function test with super and subsonic A video posted by Expedition Firearms (@expeditionfirearms) on Aug 29, 2014 at 11:37am PDT