CVA .54 Cal & Shotgun Combo Question?

[Lawnscaper]

I was wondering if someone can school me on what kind of nipple this is and also the purpose of the metal block where a rear sight could go? Bought this combo and just trying to figure things out on it.

 

[BoomStick]

Nipple is an aftermarket replacement called a Mag Spark, unscrew the cover, place a modern primer and replace the cover.
The socket head screw is not standard either, almost looks like a washer under because the socket screw is too long and would block the flash channel.

Block is likely for some sort of target sight or scope.

The previous owner was something of a tinkerer it would seem...

 

[Lawnscaper]

Thanks for the info, bought it from a member on another site, man had passed away so he was selling for the wife he didn't know much about the gun so it will be fun working up some loads for both of them.

 

[Lawnscaper]

I pulled my CVA 54.Cal out today and tried a 209 mz primer and it would not fit , any ideas as to what might fit in it? Primers are hard to find in my area and didn't realize the 208's wouldn't fit until now.

 

[Gtrubicon]

I believe they take a large rifle primer. Not a 209 shotgun primer.

 

[BoomStick]

Primer goes inside and cover with striker threads down over. Looks like a large primer, but without handling could be a small primer.

If you want a standard CVA nipple for #11 shoot me a PM, I've got a couple new ones and i'll send it for the price of postage.

 

[Lawnscaper]

Thanks for the replies, I just ordered a pack of 3 cva nipples that should be here next week.
I'll see if I can find someone with some rifle primers and see if they fit.

 

[Frontier's]

I believe they take a large rifle primer. Not a 209 shotgun primer.

They offer both.