Help with badly broken draws

[scientificjdog]

I inherited an SMLE Mk III recently and I think it'd be nice to get it in working order. However, the draws have completely broken off of the fore-end. I've tried looking around for other similar issues but I haven't found any rifles with the draws entirely separated. I noticed the butt stock bolt is not protruding out at all either so maybe someone cracked it that way and shortened the bolt to hide their shame. I'll attach pictures at the bottom.

I'm new to woodworking but its something I'd love to learn, especially with all the COVID-19 free time. Should I clean up the broken end and glue a new piece of wood in? What kind of glue should I use? I can take plenty of measurements to get the fitment pretty close. Does it need another brass screw? This one isn't biting anymore on one side.

Lastly, if my stock bolt hypothesis isn't true, do you guys have any clue what caused the break in the first place?

I appreciate the help! I'm new here, and to guns in general, so apologies if I've made any mistakes.

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[Son]

If the metal piece in your hand with the other broken bits is original to the rifle, then the “stock bolt” didnt have anything to do with it.
What happens, looking at the picture of the upside down action, is the draws get loose. The recoil is passed from the receiver to the foreend rearward through the two small lugs either side of the sear pivot. These contact with the end of the two pieces of wood that have come out, back to the butt socket. If soaked with oil over many decades the wood has softened and been compressed at the point of contact, becoming loose and allowing the foreend to move forwards - backwards along the rifle. The only thing holding it is the collar under the front trigger guard screw. The foreend keeps moving and the stationary collar splits the foreend lengthways, spreading the rear further and allowing the bits to break free.
I can see the crack full length. It is going to take some good work to save your foreend.
I would suggest you have a read of the writing by Peter Laidler on the subject of repairing the draws. You will find them in the knowledge articles listed above the message board.
Ask questions, post pics, many here all to willing to help.