Did anyone other than IMI make a Model A Style Semi Auto bolt?

[chipster]

(not a FS listing) - I have a parts gun I'm trying to find a home for which has a Model A style bolt without the mechanism that prevents the striker from trying to reach the primer if it's not in battery. I want to say this is an original Model A bolt, but I forget whether anyone else knocked these off. As far as I know the McKay bolts were all Model B Style and I know this predates the f*ckery Century was doing milling SMG bolts to Semi Auto (it's definitely NOT one of those cuz it works ).

anyone happen to know whether the Model A style was unique to IMI manuf? Are IMI bolts supposed to be marked (looked, but did not find)?

 

[tonelar]

my model A has a bolt just like this one

 

[NewHobby]

How deep is the recoil spring pocket? Do you have the recoil assembly, tube length and spring coil count?
Looking to make one for my bolt (sounds like yours, Model A Semi). I just posted in gunsmithing section that no one reads as much.