Picked up some cool parts!

[Iraqgunz]

I doubt I will find the other stuff, but you never know. I have been able to locate an original Colt bolt carrier as well as an older style firing pin. I wish I could have raided a bolt from some of those old DRMO guns.

[MistWolf]

Very cool!

What vintage are those parts and what, if any, are the differences between them and their modern counterparts?

[Iraqgunz]

MW,

This carrier and firing pin is most likely from a Colt model 601. The carrier key is the full rounded type. Notice it is staked at the top only, with one location at each screw. The Model 601 was produced from late 1959 up to 1963.

You can also see the lack of forward assist notches and the difference in the firing pin retaining pin hole.

http://imageevent.com/willyp/firearm...=0&w=4&s=0&z=9

https://bpullignwolnet.dotster.com/r...flGde/601.html

http://jobrelatedstuff.com/archive/t...f=123&t=285908

[ABNAK]

Didn't those have the early "duckbill" FH?

[Nengland]

Very cool IG! What was the purpose of the fathead firing pin?

[Renegade04]

Didn't those have the early "duckbill" FH?

Yes they did. Additionally, the 601, 602, 605, and 607 used the early chrome slickside BCGs with a firing pin like the one in the OPs pic.

[RegisteredTM]

Nice!

[Iraqgunz]

Not sure to be honest. But, if you look at the old B&W photos from the AR-10 you will see that firing pin.

It was allegedly replaced after reports of slam fires when chambering rounds. I also read there was no proof to substantiate it, but it was changed nonetheless.

Very cool IG! What was the purpose of the fathead firing pin?

[CAR-AR-M16]

Nice score!

[ww2farmer]

Nice find. Just imagine though, if some one got a BCG from PSA, AIM, or brand x/flavor of the month with a key staked like that how much crying foul there would be.