seems prefix 39- was used for the SLB2000 and the GMG 40MM, but HK acknowledges Prefix 57- as GMG. Please feel free to post any prefix’s I have not been able to update.Ĥ3- HK94 (most 80s models) Exceptions Date Codes IC to ID are 3 digits, ID to IG are 4 digits, IG is 5 digits, IH to IK are 43-XXXXXĥ5- Advanced Combat Rifle (ACR) 4.73x33mmĦ7- MP5PT 9mm Dynamit Nobel Plastic Trainingġ81- HK237 (G36 in.
The World of HK has not been updated since 2007/2008. Hey All! I’m trying to update the serial prefix on each product line HK puts out.