Help Identifying an Enfield N0. 4 MK 1

It looks like the original numbers ay have been scrubbed and then re-stamped. Does the number on the bolt match? It looks like there was a modification of the rear sight, can we have a picture of it?

Same here !!  I was comparing photo with My MK2 Paki ..and I have the screw head on the right side of my sight mount ..unlike the left side in the photo ..  
Same thing on the 1943 No4 MK1 and the Long Branch ....?????

Well, I hope someone else weighs in...  I think the numbers were scrubbed  and new ones added. The sight is an after-market item, not military issue. Are there any other marks on the barrel? Import/export stamps?  And can we get a look at the right side of the receiver?

Here is the picture of the right side of the receiver and I took the back half of the hand guard off and I could see BZ on the barrel.  The screw on the front band is stubborn and I haven't got that to off yet to get the whole hangaurd off so Ican get the barrel and the action out to take a better look.

I haven't shot it yet I was planning on doing it tomorrow.  Honestly my concern was is it worth what I bought it for after I started digging into it and if it isn't should I try and get my money back.  I am not sure whether talking price is something that is okay in these forums or not.

Sure I don't mind I paid $399 which I thought out of the gate was about $50 too much but the bore looked good and the stock was nice.  I also liked the target sites since I shoot steel at 300yds a lot of the time with some of the other older miltary rifles I have like my M91/30, M39 and 1903A.  The one thing that got me being new to Enfields I thought the target site was actually an Enfield option not an aftermarket sight.  Any way I appreaciate the help and just was seeing if I did okay for a rifle I really just want to have fun shooting with it this definitely won't be something thast just hangs on the wall.

Well I did some more investgation and the rear sight on it seems to be the one made for the training .22 rifle.  These are not too expensive and sold on ebay marketed for the No. 4. The probelm with that is the reveiver hole for the windage screw needs to be enlarged with a #13 drill and another hole made for the detent ball and spring.  Who ever did this didn't even bother to put in the detent ball and spring.  This would seem to indicate that I may a receiver that now cannot take a stock sight if I wish to put one in and I have a aftermarket sight not meant for this rifle not even properly installed .

The detent I was referring too was for the windage screw.  I am attaching a picture you can see where they actually did drill the hole where the detent ball should go but it is not there.  The link I have put in here shows some other real Parker Hale sights for this rifle and also talks about the one that looks like the one  this rifle has.  I want to use this to shoot in Military Rifle and Vintage matches and at first I figured if the sight was not allowed I could just put on an original but looks like they reamed the hole for the pivot ping so that may not be possible.   I must say everyone has been really helpful and this is a great learning experience in Lee Enfields I wish I had some of this knowledge before my first purchase but it is a nice looking rifle and although I have not shot it yet and I am sure it will be a lot of fun to shoot.