Type III Safety Characteristics

[firstflabn]

I acquired a small group of carbine parts and tools. Amongst the goodies were three plain face push safeties. Can anybody help me determine if they are real, commercial, or fake from the following description? I also bought another one before I had any idea of what I was looking at. I include it as well. I am planning to trade these for other needed carbine parts and don't want to mislead anybody. I won't turn loose of them unless the authenticity is clear. The notch depth measurements might be a couple of thousandths off because of the difficulty in aligning the mic - they could be either slightly low or high.

#1) Shiny blue/black finish, .693" long; .308" wide.; square notch is .258" wide, .153" deep Has slight dimples on both faces (mold casting marks?)

#2) Black park, .700" long; .311" wide; square notch is .253" wide, .146" deep.
#3) Black park, .704" long; .311" wide; square notch is .251" wide, .133" deep
#4) Black park, .700" long; .311" wide; square notch is .255" wide, .158" deep.

Thanks.

Information

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[imarangemaster]

Pics are best for telling.

[INLAND44]

I have one in my carbine that is supposed to be genuine. About .702", it's plain on both ends and dark Parkerized, just a little darker than the receiver. Works great!

[firstflabn]

Thanks. I got some help offline from another member and am just beginning to develop a grasp. Here's a couple of pics. Pictures are large, so they take awhile to load. In the second picture the safeties are grouped 1-2 (left to right, top row) and 3-4 (l-r, bottom row). #3 is much shinier than it looks in photo. #4 has slight linear marks and #1 has faint circular marks. Opinions and reasoning behind them are welcome. If any are USGI I'll be looking for opportunity to swap for other parts, but will give my offline advisor first crack. Thanks.

http://s4.postimage.org/e9uui-31a61763-resize.jpg

http://s3.postimage.org/KQivi-31a61763-resize.jpg

[Harlan (Deceased)]

firstflabn, I reduced the file size so they'll load faster and posted your photos below.

[firstflabn]

Thanks, caf. In the meantime I stumbled on some possible further info on #3. CCNL #254-5 has a sketch of a safety that looks like #3 above - the shiny one at bottom left. Like #3, the one in the newsletter looks like a Type II, but with the two dimples of a Type II. Unlike the one in the newsletter, mine also has some material removed from the middle ridge - clearly not wear, but regular grinding/milling marks. The dimples were not visible in the previous photos so I include the new photo here. Any thoughts?

http://s4.postimage.org/k4i6r-31a61763-resize.jpg

[usgicollector]

It almost looks like it was a type2 then someone changed it to a type. Interesting pics.
Dave

[imarangemaster]

It looks to me like someone wanted to make the safety easier/quieter to disengage, but over did it. They had to make two deeper divits for the detent because they took too much out of the middle.

[BrianQ]

usgicollector wins the prize

[usgicollector]

BQ

Was this factory or bubba done? I can see reasons for both doing it.
Dave