Under current US law, such records are maintained by the manufacturer. If law enforcement wants to track a gun, it works something like this. LE finds H&K USP pistol at crime scene, Serial123456789. They run it through NCIC To see. The date code is located on the Left hand side of the pistol and is represented by two letters. Below is the date coding chart. The letter will correspond with the number.

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(or how to interpret HK's codes and other arcane details)

Markings: The left side of the slide is marked “HK USP.40 S&W” and below the date code and proof marks, followed by “22-19281”. The barrel through the ejection port is marked “HK.40 S&W / 22-19281' and with an eagle over 'N' proof mark. The grip frame on the right side is marked “Heckler & Koch GmbH / Made in Germany”. Nov 22, 2003 (or how to interpret HK's codes and other arcane details) Jump to date codes. HK developed a series of codes to help identify their military/law enforcement firearms. Using their 2 number codes, it is possible to identify the type of firearm (belt-fed machinegun, submachinegun, etc) and the caliber. Here is how the code system breaks out.

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HK developed a series of codes to help identify their military/law enforcement firearms. Using their 2 number codes, it is possible to identify the type of firearm (belt-fed machinegun, submachinegun, etc) and the caliber. Here is how the code system breaks out:

Type of Weapon

Box (magazine) fed LMG

Belt fed machine gun

Select fire assault rifle

Paramilitary rifle

Submachine gun

Grenade launcher

Grenade launcher, added to weapon

n/a

Semi-auto rifles

Caliber

7.62x51mm

7.62x39mm

5.56x45mm

9x19mm

n/a

4.6x36mm

n/a

40mm

Naturally, there are combos of the first and second number that (as much as we might want one) would produce an HK firearm model number that doesn't (or won't ever) exist. For example: the HK59, the BIG brother of the MP5.. :-)

There have been model number changes over the years, most notably the models 91 and 93. They were originally imported as the 41 and 43, respectively, and if you look at the coding, you'll see they are identified as 'Paramilitary' rifles -- which to this day I maintain that they are. They are not 'Assault Rifles' (which is a media term).

HK Date Codes

Date codes are the next thing that cause a little confusion for new HK owners. Like the model numbering scheme, the date codes are a 2 letter code and indicate the year of manufacture:

Corresponding digit
0
1
2
3
4
5
6
7
8
9 (J used for mags, K for firearms)

Therefore, if your HK91 shows a date code of IH, it was made in 1987. Pretty simple.

Now that we have that squared away, I have to note that it appears that HK has changed their date coding for post-ban LE/military magazines, and there hasn't been any definitive documentation to indicate what this is.

Last Update:11/22/2003 03:07 PM

My HK SL8-1 has a tiny gap or separation in the stock above the trigger guard. Is this cause for concern and is it covered under HK warranty?

Like all HK products, the SL8-1 is covered under a limited lifetime warranty. But the separation you describe is not a cause for concern according to HK engineers. It is cosmetic and will in no way affect the rifle’s functioning or its structural integrity.

I need instructions for my FABARM semi-automatic 12 gauge shotguns.

The free carrier option featured on several FABARM semi-automatic models allows the shotgun to be unloaded safely without chambering a shell from the magazine. This feature also allows for the shotgun to be stored or handled safely with shells in the magazine but with the chamber remaining empty.
To load when chamber is closed:

Make sure the safety is on! *Point firearm down range
Push the free carrier latch to the rear of the gun until it clicks.
Pull the bolt to the rear until it locks into place in the open position.
Load a shell into chamber and depress the bolt release button.
Turn the gun over and load additional shells into magazine.
You are now handling a loaded firearm!
With the free carrier feature, an unfired shell may be unloaded from the chamber by pulling back on the bolt cocking handle and ejecting the shell. Shells present in the magazine will not be loaded into the chamber during this process.

To load through magazine with the bolt closed:

Make sure the safety is on!
Load shell(s) into magazine by pushing the free carrier latch down with the shell and sliding the round(s) into the magazine.
Push the free carrier latch towards the rear of the gun until it clicks.
Pull the bolt to the rear and release it (depressing the bolt release button is not necessary).
At this point, additional shells may be inserted into the magazine
You are now handling a loaded firearm!
To completely unload the firearm:

Empty shell (if present) from the chamber
Visually inspect the magazine for additional rounds.
Depress the free carrier latch toward the rear of the gun to release shells from the magazine.
Cycle rounds out of gun by pulling the bolt to the rear of the gun
The gun is completely unloaded when the bolt locks back and the orange magazine follower is visible from the bottom of the gun.

How do I find a holster to fit my HK pistol?

There are many holster manufacturers that carry holsters that fit HK pistols. Click here for a contact list.

Does Heckler & Koch offer “custom” gunsmithing or re-finishing services?

HK does not offer any type of custom gunsmithing or re-finishing services.

What kind of ammunition should I use in my HK weapon?

Use only commercially manufactured ammunition with internal ballistic pressures which are in strict accordance with the specifications of the Sporting Arms and Ammunition Manufacturers’ Institute (SAAMI). Be certain all ammunition you use complies with the SAAMI specifications. If you are uncertain, contact your ammunition supplier for verification. If you would like any further information on specific ammunition, you may contact one of the major ammunition manufacturers.

Why did HK refuse shipment of my firearm?

For security reason all packages being returned to Heckler & Koch must have an RMA (Return Merchandise Authorization) number. If there is no RMA# o

Hk Usp Serial Number Lookup