They are the same as the AR10, those roll pins go in and the end slips off. One side would do perhaps, then when cleaned you tap them back from outside. Make sure they're flush before using them.
(Sorry, not familiar with the AR10.) The role pin is accessed only on one side. If the pin is tapped in - clear of the piston and piston is removed I assume the pin is then free to fall out? After disassembly the pin is re-inserted and tapped back in?
An aerosol can of "ANA611 Interior Green "arrived today and is not the example shown online at all. It's more like the Brownells 601 Lime Green they used on their first production 601's... $40.72 a can, sucks out loud.
Ha...but wait there's more!
USPS Tracking indicated delivery today from Brownells for a retro 601 front pivot pin. It arrived at the local Post Office OK - just like it was supposed to, but someone decided that made too much sense. So..... they sent it to some place called Rockdale, TX. Tracking now says maybe Wednesday.
Pressing Onward
Now then, I had an old can of "Testors 1265 Olive Drab Flat Spray Enamel" I've had several years for model airplanes. After a few minutes of shaking, it sprayed well enough for a few light coats, and it looks like a perfect match. Another can is on order and that should finish it up.
Meanwhile, the Brownells retro front pivot pin is supposed to be "out for delivery" (again) this morning.
I had an old can of "Testors 1265 Olive Drab Flat Spray Enamel" I've had several years. After a few minutes of shaking, it sprayed well enough for a few light coats, and it looks like a perfect match. Another can is on order and that should finish it up.
Photos include initial first light coats the Testors OD Flat that I that look very good. The first can is getting low and I don't want it to spit so I have another small can of the same stuff on order.
The independent square paint swatch is the ANA 611 that was ordered for comparison. It isn't very accurate compared to its online example that was offered.
The first coats of the Testors OD will be lightly sanded and given one or two finish coats and cured. Then the receivers can be assembled, after I find a Colt full-length buffer tube and spring.
The last couple photos are a handguard and stock of an original USAF 601 a friend took for me. I t appears the Testors OD enamel model paint a perfect match.
The Brownells 601/602 dimpled front pin came it the mail and fits perfectly. That only leaves a safe/selector switch to be drilled and fitted to add the correct period detail hardware.
Even after thinking it out several times I was hesitant, not knowing some unique engineering method would mess up a very difficult item to replace if I wasn't cautious. I thank you for your alway continued advice and assistance.
Originally Posted by 
PM
