I saw a few examples of "PC" peep sights in Ohio..

[Herb]

Brandon- fiber optic front sights are available from Suzie at Muzzleloader Builders' Supply (479-292-8866). They come with a 3/8 dovetail in green or orange optic. Cost $9.50 each. I just added two to my order, for friends who can't see the front sight. Since you can't file them down to bring the rifle to zero, you may have to change the rear sight to zero. If your rifles have 3/8" dovetail sights, you just tap one out and the new one in.

 

[Grantman]

I have the TC tang sight and globe front sight with interchangable blades. It worked great for target work and IMO looks good. The TC "Hawken" is not exactly PC in itself. I did have to drill out the aperture for hunting use.

 

[Joel Lehman]

I just shot my 54 Isaac Haines flintlock with a long tang peep sight from the Log Cabin Shop. You can't remove a TC Hawken or any other drop in barrel with this long sight. Accuracy was excellent. I had 4 shots in one ragged hole of the bench at 50 yards. The fifth shot was a flyer, right in the X ring.

Joel Lehman

 

[TANSTAAFL]

Many thanks for posting the picture and information, great to know they are period sights. I have recieved two of the trad/peeps from TOW and will be installing them on next couple of rtifles I build up.

 

[TANSTAAFL]

"The second peep was very interesting and simple. It was a simple round threaded base attached to the tang. The sight itself was simply a large headed screw with a hole drilled threw it. Elevation was adjusted but screwing it in and out, windage must be adjusted via drifting the front site. This was a very small and unabtrusive sight, and something I may make to put on my newly completed Lyman GPR. The big Lyman Peep is nice on my Deerstalker but wouldn't look right on the GPR."

These type sights are oft referred to as "Lollipop Sights" and they are traditional. More than a few American longrifles were fitted with them and they were fairly common on English flint sporting rifles.

 

[CoyoteJoe]

Right on, simple, rugged and unobtrusive, I began making such peeps thirty years ago and use them for all hunting. An easy one to make is to cut the head off a socket head cap screw and braze or silversolder it back on edge. The cap then becomes the peep when drilled and don't make the mistake of drilling it too small, up to 1/8" still shoots fine and is useable in light so poor that open sights are useless. You can also cut off another cap and drill&tap it to use as the "jam nut" to lock elevation. Looks a lot better than a plated hexnut. I've also used common thumb screws but no matter what you do with them they still look like thumbscrews, the cap screw is much neater looking and if placed behind the hammer it is seldom noticed.