Now I have three

[SRiverrat11]

Here's a pic of a M2 trigger housing with the right wall cut away and left wall having the notch for a 9 spring. (I'm just trying to be sure your TH hasn't been modified,) I would expect your TH to be a narrow rear wall type II.
See here: The U.S. Caliber .30 Carbines - Trigger Housing Group

The link you put up tells me its the grooved wall. I saw no cutout on the right side for the M2. You know stuff I don't even know to look for.

[SRiverrat11]

I have a better camera, just can't use it now. I hope these help. The flip sight is loose compared to my Winchester.

[GotSnlB28]

Rear sight is USGI. I think some sharper pictures of around the staking would help. Unless the rifle has really been detail cleaned and it's seen some use, you will see dirt, grime, oil residue around the sight and base that indicates it's been on for a long time. I don't see that in your first couple pictures but maybe the photo. Loose (original) Rock-ola coded flip sights are rare as hens teeth and usually priced accordingly if they do show up, so if it were changed it would not surprise me that an uncoded sight was used. I don't believe that CC newsletters ever documented any Rock-ola use of unmarked base + leaf flips (some unmarked leaf).

[painter777]

I'd guess production date ~ April/March 1944.

The unmarked band wouldn't concern me it clearly has the features of a real RMC band.
Frt sight's for RMC marked TR I've seen in 2 fonts. Milling behind the blade looks very much like pics I have of a TR vs a WRA frt sight. See attached pics. TR on top of WRA, and TR on left of WRA.

I can't find any records of RMC receiving rear sight bases or leafs from any other prime in War Baby. But do know some of their Leafs were unmarked with coded bases, it's in WB.
They had Rear Sight Base's supplied by Hemphill, who WB notes marking unknown? I'd expect these to have the Square S. Also Rear Sight bases supplied by International Silver, also noted by WB as marking unknown?. Maybe just the S on the Left ? Also a Rear Sight Leaf was supplied per WB to RMC by Precision Metal & Machine Co. with WB noting marking unknown? Maybe these were the unmarked leafs (?).

Agree your Flip is USGI. Now wondering if it was a field replacement for a damaged one (?). Might or might not explain it being loose.
Either way I'd be happy to hit for $6K, get 1/2 and own that Carbine.

IIRC your carbine SN# range was in RMC's transitional period. Take a look at this beauty owned by David B: FEATURED CARBINE : ROCK-OLA 4546450 - The Carbine Collector's Club

Safe Weekend and Always Max Bet !

[SRiverrat11]

I started looking very closely while trying to take these pics, then I tried cleaning the staining off the space below the peepsight. I couldn't get much off, but thought I might see the top of a letter coming out. I need some small wire brush or something. WD 40 only worked a little bit. Now, I'm not sure if there isn't letters under the gunk. I hope these pics help more. I goofed and double attached some and still can't find the one I thought showed the top of a letter. As always, Thanks guys for your help. It is kinda fun though.

[jond41403]

I'm no expert but I definitely would not take a wire brush to it, might damage the original patina. Just my opinion. Wire brushes and old original firearm finishes never go together

[GotSnlB28]

I am always amazed at how different pictures can look. RR, definitely avoid a brush or anything like that. Bore cleaner should soften it but will take some time. I am at the point now, I clean them as little as possible but if it's thick enough to obscure the marking I understand the desire to uncover it. A few weeks ago I bought a loose flip sight that was really gunky. Zooming in with a camera there was only a light indication of a mark. After using some hoppes on a q-tip I found the leaf was marked W-I.

[SRiverrat11]

I am always amazed at how different pictures can look. RR, definitely avoid a brush or anything like that. Bore cleaner should soften it but will take some time. I am at the point now, I clean them as little as possible but if it's thick enough to obscure the marking I understand the desire to uncover it. A few weeks ago I bought a loose flip sight that was really gunky. Zooming in with a camera there was only a light indication of a mark. After using some hoppes on a q-tip I found the leaf was marked W-I.

I took another look at Charlie's pic of the B-R leaf and I was looking lower than that. There's no mark where a B-R should be on that leaf, and of course, both of you are right about a wire brush. Sometimes I get so focused on one thing, I forget the consequences of doing it. Thanks for the reminder.

[painter777]

They had Rear Sight Base's supplied by Hemphill, who WB notes marking unknown? I'd expect these to have the Square S.

Correction to above, It was Lyman that used the Sq S. Hemphill the rounded S.

To uncover grimed over markings I've also used Hoppes #9. Dabbing the area then covering with plastic to keep from drying out. Have also used Lacquer Thinner with good results, just being careful not to get it where I don't want it.

[SRiverrat11]

Correction to above, It was Lyman that used the Sq S. Hemphill the rounded S.

To uncover grimed over markings I've also used Hoppes #9. Dabbing the area then covering with plastic to keep from drying out. Have also used Lacquer Thinner with good results, just being careful not to get it where I don't want it.

So, those pics don't tell us anything that we don't already know? It was cloudy yesterday when I was trying to take those. The sun popped out for 3 minutes and those pics are a little fuzzy. I'm becoming convinced it's a replacement sight, but when I get time(I'm at work now) I'll try using some hoppes. I think I have a bottle around here somewhere.