Ak Upper Rails surface

[BB63Squid]

Just went through a T/S session with my receiver. I started hogging out material evenly down the face of the upper rails only to be met with the bolt not clearing the right side of the trunnion issue.

After much eyeballing I realized that my ejector was causing the bolt go cock-eyed because it was "too tall" so to speak.

After careful removal of of the ejector material (1/64th) I can get the bolt to clear the trunnion face and rotate freely in the carrier to lock-up.

I have two questions...

1. Is it bad juju to remove ejector material after it has been hardened?

2. How smooth of a surface should I ideally have on the upper rails to avoid galling the carrier? I am assuming as close to true and mirror as I can get.

Old salts please chime in.

[SJgunguy24]

I wouldn't worry about taking taking some off a hardend ejector, just don't take off too much.
The top rails don't need to be finished to a mirror shine, just make sure the bolt carrier slides freely.
I trim the rails with tin snips and finish with sand paper.

[BB63Squid]

I wouldn't worry about taking taking some off a hardend ejector, just don't take off too much.
The top rails don't need to be finished to a mirror shine, just make sure the bolt carrier slides freely.
I trim the rails with tin snips and finish with sand paper.

I remembered an earlier post where you extolled the virtues of the tin-snips so I figured I'd give it a shot so I shoot a, hopefully, straight line down the rails. The problem was the lower rails got in the way. So most of the removal was done with my Dremel and a carbide bit. Always in back of my mind was the visual of the carrier flying off and meeting my GQ magazine quality good looks. Shortly after-wards I woke up from my daydream and remembered the adage..

" Measure twice, mark with chalk and cut with and axe"

So far I think I am doing pretty good but we shall see how it shoots.

I must say, this is friggin' addictive.

[Noobert]

IMO, the easiest way to cut the rails perfectly is to have a Dremel and this attachment (http://www.dremel.com/en-us/Attachme...l.aspx?pid=565). I attach it, chuck up a EZlock cutoff wheel, and set the correct height to cut. Full power, and out comes a perfect receiver

[SJgunguy24]

Oh just wait. If you build on a 100% you can get the build time down to a few hours. How are you squishing rivets?

[SJgunguy24]

IMO, the easiest way to cut the rails perfectly is to have a Dremel and this attachment (http://www.dremel.com/en-us/Attachme...l.aspx?pid=565). I attach it, chuck up a EZlock cutoff wheel, and set the correct height to cut. Full power, and out comes a perfect receiver

That'll work but i'm pretty good with snips, got lotsa practice

[BB63Squid]

Oh just wait. If you build on a 100% you can get the build time down to a few hours. How are you squishing rivets?

20T Harbor Freight and one of these