Need help ID'ing my new No. 4 MK1

[swilson]

The swivel I'm thinking you mean as in the one up by the front band? You know there isn't one there? There's one in the center band and butt...you have what it came with. Looks like a well handled rifle, after a check out should give good shooting service. How's the barrel inside...good? Two groove or more?

Thanks for all the reminders about headspace. Have not had it checked yet (or fired it). The swivel on the center band is the one I added...along with a new screw and sling. When I bought it, it had no swivel, a boogered up oddball screw, no sling and a bent spring on the safety.
APEX filled my needs at a reasonable price.
Barrel is 2 groove and looks to be in decent shape. I dont have a scope to fully inspect it, but lands and grooves are still crisp enough...and no sign of pitting. There is one spot by the chamber mouth where the extractor lines up with, that I need to get a better look.

Information

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[Alan de Enfield]

Thanks for all the reminders about headspace. Have not had it checked yet (or fired it).

Please don't forget :

Clean the locking lug surfaces of the rifle and put a smear of 'engineers blue' marking dye onto the corresponding locking surfaces of the inspectors bolt. Insert this bolt RIGHT FORWARD, rotate it closed, then draw it backwards and forwards a couple of times to mark the mating locking surfaces of the rifle. Push it forwards, unlock and remove.
Examine the locking surfaces of the rifle. The blue witness marks should be evident. This ensures that whatever wear that has taken place on the rifle locking surfaces has taken place equally. If its not, then I'm afraid that the rifle is unserviceable.

BUT, that's not quite the end of the story because you won't have this 'Gauge, Inspectors, bolt' but it's only right that I tell you. Now for a little secret. If you have ever bought a rifle that has a sploge of red paint on the left side, adjacent to the internal left side locking lug, then you now know that the rifle was condemned for 'worn locking lugs'.
If you are going to fit a second hand or new bolt, then do the same thing. If the dye pattern is one sided, then stone the high surface of the bolt until BOTH locking lugs bear evenly against the locking surfaces of the corresponding surfaces in the body. BUT DO NOT ATTEMPT to stone the rifle to get a bolt to fit (you can only get to the right hand surface in any case ....). The rifle body is induction hardened at these points to a depth of .004 - .006" but we have found it deeper.