Heckler and Koch MP5A3 9mm Factory HK MP5A3 MFG 1984.  This gun is a 110% factory gun, not a conversion of any sort.  The Date Code is IE which means it was MFG in 1984.

Heckler and Koch MP5A3 9mm Qualified Sear A3 Stock Collectible 4 Pos / 3rd Burst Lower

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...

MP5A3 with 3 Pin Swing Down Lower Heckler and Koch This firearm is a 3-pin swing down registered receiver model, closely resembling an authentic factory HK design. It is compatible with all...

HK MP5 40/10 30 Round Magazine, Made in Germany New HK German MP5 40/10 30 Round Magazine Latest Production With The Steel Feed Lip Inserts. Each magazine will fit all of the HK MP5 40/10 rifles...

Heckler & Koch 762A1  ID Number 81000586  Like its 5.56 mm counterpart, the MR762A1 is a direct descendent of the HK416/417 series, only in a semi-automatic rifle configuration...

B&T HK MP5SD 9mm Suppressor Brand New Brugger & Thomet 9mm HKMP5SD Silencer Identical to the MP5SD suppressors that B&T AB provides to HK Germany for the HK MP5SD except they are made...

Heckler and Koch MP5K PDW 9mm This MP5K PDW has a 4Pos trigger group that is registered with a Super RARE RDTS Housing.  The internal metal housing is the registered so you don't have to worry...