Help identifiying reproduction lock

[Jim Cunningham]

I purchased a used Enfield as a winter project, and purchased it primarily because of it's nice triggerpull (and low price). There are no identifying manufacturer marks on the barrel, but it features 7 groove rifling, and this unusual lock. Any idea what it is, or who made it? I've had dozens of Enfield's both reproduction and original, and have never seen the mainspring held by a screw? Is this a "custom modification" or does someone actually manufacture it this way? I'm guessing the AC on the bridle stands for Armi Chiappa. Any idea where I can get replacement parts?

6022

Thanks,

Jim

[MR. GADGET]

Seen a few like that.
They add the screw to make it easier to make the lock plate so you dont need to cast or.mill the stop for the spring.
want to say the 1842 armisport has a screw on some, not the real guns that I know of but may be mixing something up.

[Bruce Cobb 1723V]

Over the years modern manufactures have invented and sometimes reinvented lock works. This spring idea was common pre 1860's, the screw went thru the springs boss then. I have seen modern coil spring designs in older 1960's Zouave lock designs too. They all work and are interesting because of their inginuity.

[1Hawkeye]

Yes its a armi-sport / chiappa Try Taylor & co for lock parts they are the biggest importer for them.

[Merrill]

Yep. I'd say that's an armi sport

[vljenewein]

Looks just like my ArmiSport /Chaippa P1853 3 band Enfield.

[Fred Jr]

I have a Harmon-Large barrel on my Enfield. It has 7lans and grooves.