bobbysixty(For SP5 and HK variants) - Geissele G2S trigger (rounded to funtion in SP5), Super Safety, Grey Market research lightweight slip trip, LS MP5 Slip Trip Extender (in place of buffer - but buffer also included). Around 100 rounds to make sure functioning. Complete working system - $500 shipped. Shelf Lower (Semi-Auto/Clipped & Pinned) These models feature a steel shelf welded to the receiver to prevent the installation of machine gun trigger packs, requiring the lower receiver to be “clipped” (removed metal) and “pinned” (using only the rear push pin). HK SP5 & SP5K / SP89: The standard, modern German imports feature this shelf. PTR 9R / 9CT / 9KT: PTR models use a shelf system. Dakota Tactical: Uses a shelf system.
