Page 1 of 1

Another MP28!!

Posted: Tue Oct 03, 2017 2:46 pm
by razorlight
After seeing Chefs MP28 lookalike, I was inspired to have a go myself. The main difference with mine is I decided to chop the sten about rather than be able to change it back.

I blew up some scale plans to actual size and started by looking in ebay for an air rifle stock. Didn't have much luck, I couldn't find one that would work. So I bought a 50mm deep lump of ash plank off ebay to make a stock and set to work with a jigsaw, router and chisels. I thought I'd bitten more than I could chew, you have to be very careful as you end up with 5mm walls at the sides. Anyway it worked out OK. The stain I used was Osmo walnut oil woodstain (ebay) which was much better than the old tin of Homebase Walnut stain I tried on a spare bit of wood. I left a 25 mm thick front end on the stock as I decided to mount the donor gun through the front end rather than from underneath. I made a bracket using 3mm ali, pop riveted and glued it with JB Weld (brilliant stuff) and fitted a 6mm thread insert which lines up with a hole drilled in the front of the stock. For the rear mount I made a 2 piece custom bracket to try and copy the appearance of the tilt release of the real gun. It has a hole drilled through the bottom of the release button so the original mounting screw is still used. A removable second piece then fits on the bracket with a 6mm screw into an insert in the stock. On the upper receiver, the cocking handle has been moved to the rear. I took out the curved piece of ali sheet that the cocking handle mounts onto and carefully cut it in half and glued it behind the cocking handle slot. It looks neater and stops water getting into the gearbox when it rains.

The barrel was made of 40/2mm ali tube (easier to drill through than 3mm) and I fitted into the front end of the barrel sleeve, a short piece of ali tube which fitted exactly over the sten barrel to make the whole thing stronger. Trigger guard is made from 3mm ali using metal putty to make the shape as original as possible. The sight was again made from the scale drawings and refs using an AK47 sight (same as Chefs version).

The battery fits in the rear of the stock using an extension lead I made up, which is just long enough to come out of the end. I had to drill 2 holes down the centre of the stock hoping to god they'd meet up. I pencilled 2 lines on the side of the stock as guides then drilled into it with a 460/13mm long wood auger drill (ebay). That was probably the most difficult bit to do. To my great relief they joined up. The idea being that once the gun is put together, all I have to do is take off the butt plate and fit the battery. I fitted the end with 2 metal threaded inserts(for wood) so it should be quick to fit the battery. Just waiting for some of the satin black enamel to dry fully and it all together and test fire it tomorrow ready for the Ruhr game on Saturday. I just hope it all works properly!! I'll put some pics up tomorrow of the completed gun in case anyone else is thinking off making one.

Thanks again to Chef for his excellent post

MP28 1.JPG

MP28 2.JPG

MP28 4.JPG

Re: Another MP28!!

Posted: Tue Oct 03, 2017 5:16 pm
by Hänschen klein
Looking Good :good:

Re: Another MP28!!

Posted: Tue Oct 03, 2017 6:32 pm
by TheChef
Looking great, good work, will be interesting to compare some time :good:

Re: Another MP28!!

Posted: Tue Oct 03, 2017 8:04 pm
by Granger
Looks great. Can't wait to see it in person

Re: Another MP28!!

Posted: Thu Oct 05, 2017 6:57 pm
by razorlight
Assembled the gun and test fired it this afternoon. All working as it should. Hope it lasts the day at Ruhr.

MP28 5.JPG

MP28 6.JPG

MP28 8.JPG

Re: Another MP28!!

Posted: Thu Oct 05, 2017 7:10 pm
by Zero Bravo
Looks fantastic, can’t wait to have a look on Saturday. Not so happy I may be shot at with it :?

Re: Another MP28!!

Posted: Thu Oct 05, 2017 7:27 pm
by Granger
Very nice. I love wood stocked smg's

Re: Another MP28!!

Posted: Fri Oct 06, 2017 7:52 am
by Hänschen klein

Re: Another MP28!!

Posted: Fri Jan 05, 2018 6:55 pm
by McVickers
Very nice!

Re: Another MP28!!

Posted: Sat Jan 13, 2018 5:46 pm
by razorlight
Unfortunately, when I took it to the Ruhr game, it was a bit of a fail! It worked fine but was firing with too much hop. I've just sorted it out today. I remembered I'd seen a post somewhere on how to make the AGM sten hop adjustable. I found a post eventually but all the pics where gone. I found some images showing how to do it , so I posted them up in case anyone else wants to do it.

In essence, the hop adjuster has square ends and does not turn down when adjusting the allen key on the top. You have to remove the barrel assembly, pull out the inner barrel and hop unit which is in one piece. On the top of the hop is the adjuster. Press out the little pin at the rear, remove the little spring. Then, very carefully with needle files shape the adjuster as the pics, replace the little spring with a plastic nub and re-assemble the unit, checking that the adjuster works by looking down the barrel. Works a treat. I'll fine tune it when I get to the Oosterbeek game in a few weeks.

Sten hop up 4.png
Sten hop up 4.png (19.86 KiB) Viewed 1103 times
Sten hop up 2.png
Sten hop up 2.png (54.25 KiB) Viewed 1103 times
Sten hop up 1.png
Sten hop up 1.png (21.23 KiB) Viewed 1103 times

Re: Another MP28!!

Posted: Fri Aug 17, 2018 5:36 am
by Lord Elpus
Good modification on the hop, I knew this was on one of the posts from Nick, took me some time to find it. I will be doing this today on my sten.