Heckler and Koch MP5K-PDW 9mm Qualified Sear 4 Position / 3rd Burst Lower Host is a pistol MLOK Forend Surefire Flashlight GSL Fatman

Heckler and Koch MP5A3 9mm 4 Position 3rd Burst Lower A3 Stock Desirable Fleming Sear M-Lok Forend Surefire Flashlight GSL Phoenix Silencer  

Heckler and Koch Registered Sear Gun SP5K-PDW 9mm This is a customized Heckler and Koch SP5K PDW with a threaded 3 lug barrel by B&T USA LLC.  This has the new B&T USA LLC collapsible...

Heckler and Koch MP5A3 9mm Fleming H Sear 4 Position 3rd Burst Lower A3 Stock Surefire flashlight forend Host is built by RDTS  

Heckler & Koch MP5A3 9mm Fleming Sear installed into a 4pos / 3rd group All work was done by Ralph Smith @ RDTS French A3 Stock HuxWRX Rad 9 Silencer included  

Heckler and Koch MP5 with JAC Sear 3 pos pictogram, Vortex Strikefire optic, A2 stock.  This is a registered sear by JAC.  You could move the trigger pack over to any numbers of hosts...