I have 5 each Simunition brand conversion kits for the HK MP5 9mm SMG. These kits are complete and used (some more than others). These convert the typical MP5 system for use with FX marking cartridges during force on force exercises. DO NOT USE LIVE AMMUNITION THROUGH THE KITS.
prettiest and ugliest
Might trade for Aimpoint micro or Larue SPR 30mm mount +/- cash