My rifle, serial 370330 carries an additional receiver mounted sight that has been inlet to the stock just in front of the magazine cutoff.   It carries the Lyman patent details on the slide shaft, and the eyepiece has a fold down aperture which when folded reveals a simple battlesight.   I cannot find any reference to this sight in Poyer's book or Brophy's.   How common is it, and what is its backgouund?   Any info would be much appreciated.   I tried to add two photos to this post but the file size was too large to be accepted.

'Artistsrifleman' - It sounds like your aperture receiver sight is a Lyman #34 or #33. The #34 had 'screw adjustable windage' and would accept a screw in eye-piece. The #33 had 'friction adjustable windage' and was not threaded for a screw-in 'peep'.

As 'gnoahhh' suggested, these sights required two new drill & tap holes in the Krag receiver.

Lyman manufactured and offered this sight from approximately 1895 to 1943. It was adapted to the U.S. Krag, 1903 Springfield, Lee-Enfield, and Remington-Lee.

Although not rare to see in North America, the #33 & #34 Lyman sights are interesting to sight collectors and get priced from $125 to $275.

It would be interesting to see pictures of your Krag Sporting rifle and know the story of how it got to the UK.

'Artistsrifleman' - Your Krag, #370330, would have been built around January, 1902.

Is there a dated 'acceptance cartouche' on your stock, just behind the magazine cut-off lever?

It is unusual to see a Lyman #34 rear-sight on a Krag that is still in 'military configuration'. It suggests someone had it set up for Target Shooting, but, in the U.S., Service Matches were fired with Issue Sights.

Here is a photograph of U.S. Engineers in G.B., circa 1917. They must have been an early contingent given their obsolete equipment.

Yep - 1903.   As the rifle came from an arms fair at the English home of target shooting (Bisley) I guess it was set up as a target rifle over here.   We don't see many Krags.  Nice photograph - thanks.   Perhaps a few of them went home without their rifles!

butlersrangers wrote on May 3^rd, 2016 at 11:07pm:

Thanks again Butlersrangers.   Yes, I have heard of this, but didn't make a connection with the Krag.   This seem the most logical answwer.   If only rifles could talk - what a number of questions that would answer.   One of my others is a Pennsylvania/Kentucky rifle, which must have interesting stories to tell.....

butlersrangers wrote on May 4^th, 2016 at 11:33pm: