HK model 502

Classic12 · April 19, 2021, 03:14 AM

I bought this HK model 502 shotgun. I don’t know much about it except what I heard from the LGS (rare, mainly delivered to police forces) and the little info I found on the internet

Is anyone familiar with this weapon ? There is also contradictory info whether it can shoot slugs

“Only buckshot can be fired due to the muzzle device that shapes the shot horizontally in an oval pattern”

“An unusual feature of the HK 512 shotgun was special shot diverter, mounted on the barrel of the gun. It was a sort of muzzle device, intended to create oval, rather than round shot patterns. Depending on the tactical situation on hand, this shot diverter could be set (rotated) for horizontal or vertical dispersion. It also allows use of most types of standard 12 gauge slugs.”

https://en.wikipedia.org/wiki/Heckler_%26_Koch_HK512

https://weaponsystems.net/system/196...20-%20HK%20512

https://modernfirearms.net/en/shotgu...guns/hk-512-2/

Classic12 · April 19, 2021, 03:15 AM

GarandTd · April 20, 2021, 06:16 PM

I am not familiar with that, but it is very cool.

Classic12 · May 3, 2021, 04:43 AM

LGS had a 512 in for repair, took a couple of pics for comparison

Classic12 · June 13, 2021, 04:23 PM

Update. HK sent me a pdf manual in German. It states that all conventional slugs can be used

I was a bit worried because after taking one apart it is clearly larger than the diverter exit

However the LGS whose 512 is pictured in this thread told me he fired slugs through it without problems, and the diverter is identical, except it’s mounted vertically on the 512

Now, the manufacturer’s manual states they can be used, and the LGS has actual experience shooting them.

So with a little apprehension I loaded just one round and fired. Indeed not problem so I fired a few more

Next time I’ll have to try some buckshots and see the pattern

stuckinthe60s · June 13, 2021, 04:34 PM

the diverter is a modern version of the duck bill used in vietnam on all usgi shotguns i/e: 870/m37/m12...etc. but to shoot a slug? wow. thats different. hey, if the maker say ok, then ok it is.

10-96 · June 14, 2021, 01:12 PM

Nice find Classic! That looks exactly like something I've never seen before. The wood is really nice as well!

Willie Lowman · June 14, 2021, 02:00 PM

The diverter works best with smaller pellets. Number 4 buck is ideal.

stuckinthe60s · June 15, 2021, 07:24 AM

interesting bad guy target.
seems the bad guys cant afford semi auto hi cap pistols and still carry revolvers!

peterg7 · June 15, 2021, 10:32 AM

Very cool gun.

Foster slugs have fins not to impart spin but to compress down in tight choke so one would think that device would act similar to a tight choke.

Sent from my iPhone using Tapatalk

April 19, 2021, 03:14 AM	#1
Classic12 Senior Member Join Date: March 12, 2020 Posts: 696	HK model 502 I bought this HK model 502 shotgun. I don’t know much about it except what I heard from the LGS (rare, mainly delivered to police forces) and the little info I found on the internet Is anyone familiar with this weapon ? There is also contradictory info whether it can shoot slugs “Only buckshot can be fired due to the muzzle device that shapes the shot horizontally in an oval pattern” “An unusual feature of the HK 512 shotgun was special shot diverter, mounted on the barrel of the gun. It was a sort of muzzle device, intended to create oval, rather than round shot patterns. Depending on the tactical situation on hand, this shot diverter could be set (rotated) for horizontal or vertical dispersion. It also allows use of most types of standard 12 gauge slugs.” https://en.wikipedia.org/wiki/Heckler_%26_Koch_HK512 https://weaponsystems.net/system/196...20-%20HK%20512 https://modernfirearms.net/en/shotgu...guns/hk-512-2/

April 20, 2021, 06:16 PM	#3
GarandTd Senior Member Join Date: June 15, 2016 Location: Rural PA Posts: 1,639	I am not familiar with that, but it is very cool. __________________ 22lr, 20 gauge, 8mm Mauser, 35 Remington, 30-06, 5.56x45/223, 9mm, 380acp

June 13, 2021, 04:34 PM	#6
stuckinthe60s Senior Member Join Date: January 31, 2017 Location: Va., Ct., Mo.. Posts: 878	the diverter is a modern version of the duck bill used in vietnam on all usgi shotguns i/e: 870/m37/m12...etc. but to shoot a slug? wow. thats different. hey, if the maker say ok, then ok it is. __________________ Retired Military Aviation Former Member Navy Shooting Team Distinguished Pistol Shot,NRA Shotgun/Pistol Instructor NSSA All American, Skeet/Trap Range Owner

June 14, 2021, 01:12 PM	#7
10-96 Senior Member Join Date: October 19, 2005 Location: Tx Panhandle Territory Posts: 4,160	Nice find Classic! That looks exactly like something I've never seen before. The wood is really nice as well! __________________ Rednecks... Keeping the woods critter-free since March 2, 1836. (TX Independence Day) I suspect a thing or two... because I've seen a thing or two.

June 14, 2021, 02:00 PM	#8
Willie Lowman Senior Member Join Date: March 5, 2009 Location: Uh-Hi-O Posts: 3,006	The diverter works best with smaller pellets. Number 4 buck is ideal. __________________ "9mm has a very long history of being a pointy little bullet moving quickly" --Sevens

April 19, 2021, 03:15 AM	#2
Classic12 Senior Member Join Date: March 12, 2020 Posts: 696

May 3, 2021, 04:43 AM	#4
Classic12 Senior Member Join Date: March 12, 2020 Posts: 696	LGS had a 512 in for repair, took a couple of pics for comparison

June 13, 2021, 04:23 PM	#5
Classic12 Senior Member Join Date: March 12, 2020 Posts: 696	Update. HK sent me a pdf manual in German. It states that all conventional slugs can be used I was a bit worried because after taking one apart it is clearly larger than the diverter exit However the LGS whose 512 is pictured in this thread told me he fired slugs through it without problems, and the diverter is identical, except it’s mounted vertically on the 512 Now, the manufacturer’s manual states they can be used, and the LGS has actual experience shooting them. So with a little apprehension I loaded just one round and fired. Indeed not problem so I fired a few more Next time I’ll have to try some buckshots and see the pattern

June 15, 2021, 07:24 AM	#9
stuckinthe60s Senior Member Join Date: January 31, 2017 Location: Va., Ct., Mo.. Posts: 878	interesting bad guy target. seems the bad guys cant afford semi auto hi cap pistols and still carry revolvers! __________________ Retired Military Aviation Former Member Navy Shooting Team Distinguished Pistol Shot,NRA Shotgun/Pistol Instructor NSSA All American, Skeet/Trap Range Owner

June 15, 2021, 10:32 AM	#10
peterg7 Senior Member Join Date: July 20, 2017 Posts: 316	Very cool gun. Foster slugs have fins not to impart spin but to compress down in tight choke so one would think that device would act similar to a tight choke. Sent from my iPhone using Tapatalk