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Heckler Koch Serial Number Date Codes

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Heckler Koch Date of Manufacturer Date Codes

If you own a Heckler Koch product, you may be wondering what those numbers and letters stamped on the receiver mean. Well, the two letter code refers to the year the weapon was made.

HK CODE LEGEND

0 = A

1 = B

2 = C

3 = D

4 = E

5 = F

6 = G

7 = H

8 = I

9 = K

Heckler Koch Date Codes

1980 = IA

1981 = IB

1982 = IC

1983 = ID

1984 = IE

1985 = IF

1986 = IG

1987 = IH

1988 = II

1989 = IK

1990 = KA

1991 = KB

1992 = KC

1993 = KD

1994 = KE

1995 = KF

1996 = KG

1997 = KH

1998 = KI

1998 = KJ

1999 = KK

2000 = AA

2001 = AB

2002 = AC

2003 = AD

2004 = AE

2005 = AF

2006 = AG

2007 = AH

2008 = AI

2009 = AJ

2010 = BA

2011 = BB

2012 = BC

2013 = BD

2014 = BE

2015 = BF

2016 = BG

MP5 Serial Number Prefix

62- MP5 9mm

63- MP5SD

64- MP5K

Heckler Koch Receiver Symbols Explained.

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These other variations of the MP5 are known to exist:

MP5 A2

MP5 with S-E-F trigger pack and fixed full length stock.

MP5 A3

MP5 as described above with S-E-F trigger pack and retractable stock.

MP5 A5E

MP5 as described above with new style 4 position trigger pack allowing safe, single shot, counted burst, and full auto operation.

MP5 SD1

MP5 with integral sound suppressor, as described above with S-E-F trigger pack and receiver end cap (without butt stock).

MP5 SD2

MP5, with integral sound suppressor, as described above with S-E-F trigger pack and fixed full length stock.

MP5 SD3

MP5, with integral sound suppressor, as described above with S-E-F trigger pack and retractable stock.

MP5 SD4

MP5, with integral sound suppressor, as described above with counted round burst trigger pack and receiver end cap (without butt stock).

MP5 SD5

MP5, with integral sound suppressor, as described above with counted round burst trigger pack and fixed full length stock.

MP5 SD6

MP5, with integral sound suppressor, as described above with counted round burst trigger pack and retractable stock.

MP5/10

MP5 as described above chambered in 10mm Auto. This version of the MP5 submachine gun was designed for sale to U.S. "law enforcement agencies". This version of the submachine gun is identical to the standard 9x19mm version except for the chamber specification and a different magazine.

MP5/40

MP5 as described above chambered in .40 S&W. After U.S "law enforcement agencies" determined that they had screwed up with the 10mm Auto cartridge, they decided that the .40 S&W would be better. So, this version of the submachine gun was also designed for sale to U.S. "law enforcement agencies". This version of the submachine gun is identical to the standard 9x19mm version except for the chamber specification and a different magazine.

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