Anyone have an owner's manual, parts list or exploded view of the Model 510 12 ga single shot shotgun.
- Thread starter saym14
- Start date
Welcome to the site. 
Here is the information that I have:
HK 510 (single-shot)
V 0328 (HK/Arlington)
- left receiver (left upper- “Eagle” over “N”; left center- serial number HECKLER & KOCH GMBH/OBERNDORF/N MADE IN GERMANY/HK INC/ARL VA 22201; right center- Mod. HK 510)
- right receiver (nothing)
- left barrel (“Eagle” over “N” 76 “antler” KAL. 12/76)
V 0341 (no importer)
- left receiver (left upper- “Eagle” over “N”; left center- serial number HECKLER & KOCH GMBH/OBERNDORF/N MADE IN GERMANY; right center- Mod. HK 510)
- right receiver (nothing)
- left barrel (“Eagle” over “N” 76 “antler” KAL. 12/76)
a) receiver manufactured by Franchi; assembled in Germany
Tony
Here is the information that I have:
HK 510 (single-shot)
V 0328 (HK/Arlington)
- left receiver (left upper- “Eagle” over “N”; left center- serial number HECKLER & KOCH GMBH/OBERNDORF/N MADE IN GERMANY/HK INC/ARL VA 22201; right center- Mod. HK 510)
- right receiver (nothing)
- left barrel (“Eagle” over “N” 76 “antler” KAL. 12/76)
V 0341 (no importer)
- left receiver (left upper- “Eagle” over “N”; left center- serial number HECKLER & KOCH GMBH/OBERNDORF/N MADE IN GERMANY; right center- Mod. HK 510)
- right receiver (nothing)
- left barrel (“Eagle” over “N” 76 “antler” KAL. 12/76)
a) receiver manufactured by Franchi; assembled in Germany
Tony
Contact HK USA CS to inquire about a manual: 
HECKLER & KOCH USA
5675 Transport Boulevard
Columbus, Georgia 31907 USA
Main: (706) 568-1906
Customer Service: (706) 701-5554: Hours (9:30AM-4:30PM EST)
E-mail: CS@heckler-koch-us.com
Tony
HECKLER & KOCH USA
5675 Transport Boulevard
Columbus, Georgia 31907 USA
Main: (706) 568-1906
Customer Service: (706) 701-5554: Hours (9:30AM-4:30PM EST)
E-mail: CS@heckler-koch-us.com
Tony
thanks. I just acquired serial number V0346, no importer marks. do you own those two. on another forum someone said they only know of 4 or 5 in the USA
I tried HK USA, no luck. they are reaching out to germany. I need to tighten the stock any hints how to get the trigger guard out our lower?
I tried HK USA, no luck. they are reaching out to germany. I need to tighten the stock any hints how to get the trigger guard out our lower?
Through research--- HK GmbH did not manufacture shotguns--- the receivers were made in Italy by Franchi, then shipped to Germany.
HK GmbH produced the barrels, etc., and assembled the shotguns in Germany.
Tony
marquesgriffin
Contributing member
Those HK 510 shotguns are pretty obscure, so you’re not alone—documentation is really scarce. From what’s been shared over the years, they were single-shot 12 gauge guns with receivers reportedly made by Franchi and assembled in Germany, which explains why info is so limited.
You might have the best luck contacting HK directly again or checking collector forums and schematic libraries. Sometimes similar single-shot designs can help as a reference, even if they’re not exact. Hopefully someone here has saved a manual or parts diagram—definitely worth asking around.
You might have the best luck contacting HK directly again or checking collector forums and schematic libraries. Sometimes similar single-shot designs can help as a reference, even if they’re not exact. Hopefully someone here has saved a manual or parts diagram—definitely worth asking around.