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Thread: Want a challenging build? A .308 Sterling?

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    Gunco Rookie Forgotten Weapons's Avatar
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    Default Want a challenging build? A .308 Sterling?

    This got as far as experimental prototypes with the British government. Perhaps someone can start with a cheap Sterling kit and use the grip and stock with a new receiver tube, bolt, and magwell and build one of these?

    Check out all the photos at the British 308 Sterling prototype!

    Last edited by Gunco; 12-21-2010 at 03:08 PM.

  2. #2
    TRX
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    Hmm... there are two different rifles in those pictures.

    I confess I don't understand what's going on with the two-piece bolt. It looks awfully complex for blowback, but there's no obvious locking method.

    Interesting, though.

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    Gunco Veteran Viper Dude's Avatar
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    It reminds me somewhat of the 1st iteration of the German StG-45(M). Think I saw a roller in there.

    VD

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    TRX
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    Uuuhh... an H&K G3 trunnion OD is 1.532". And it's round.

    You could make a new carrier to hold the G3 bolt head. but it might be practical to just take a G3 carrier, saw the forward extension off, and just turn it round in the lathe.

    Apex has complete CETME bolt and carrier assemblies for $65 and trunnions for $30. You'd want the recoil spring too; Apex doesn't list them on their web site, but they're not expensive. You'd probably want a CETME or G3 barrel; they have flutes in the chamber to make it easier to extract the brass. A bunch of people have cut their own flutes. Apex has a new US-made G3 barrel for $175, but you can get used ones cheaper if you shop around.

    That'd give you a proven delayed-blowback breeching system, firing pin and spring, and extractor. The bolt is intended to be hammer fired; it you wanted a striker setup you'd have to make your own carrier and use the CETME bolt head.


    Come on. You know you want to do it...

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    Gunco Regular mrtank's Avatar
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    That looks like a open bolt lever delayed blow back setup. Looks like two prototypes with differences in where the locking shoulder is in the receiver. Looks like something the Moon Nazis would use in Iron Sky.

    Using a CETME bolt and trunnion converted for gas unlock with a air soft Mp44 shell would be neat.

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    Grand Poobah Gunco's Avatar
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    how about a sterling pistol in 308....YA
    "Courage is being scared to death - and saddling up anyway." - The Duke

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    Gunco Regular The Dark Knight's Avatar
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    That would be a cool project. The Bolt would be the hardest part i think. TRX seems to have the right idea. Is that Spring extra Long? Never touched a sterling spring before. I don't if the sterling Semi-auto FCG that apex sells would work or not.

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    TRX
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    Quote Originally Posted by mrtank View Post
    Iron Sky.
    WHOA! [checks ironsky.net] Whew!

    I thought it might have been released and I missed it. They're talking 2012 now. Arrgh!

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    TRX
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    Is that Spring extra Long? Never touched a sterling spring before.
    From what pictures I have, it's long for a Sterling spring... but if you used CETME or G3 bits, you'd probably want to use the spring that matches those.

    Anyone want to venture a guess on the wall thickness for the tube? You'd probably wind up with something thicker than really necessary, in order to bore it to fit the front trunnion. The G3 trunnion sitting by my keyboard is 1.533" OD.

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    Both guns seem to be incomplete. There's no front sight, no sling swivel in the bracket on the end of the heat shield, and the lugs under the back of the receiver look like they're intended to hold a Thompson-style stock. The wings on top of the receiver appear to be for a rear sight.

    The lever on the front of the receiver on the left side looks like a quick-detach lever for the barrel.

    The right side breech opening almost looks like a casting... the unused small holes might be to mount an AR-style dust cover.

    Hmm... the receiver diameters are different, and the fatter one has a box shape over the mag on the left side. The smaller one doesn't have any lugs to mount a stock.

    I'm curious about why the tags are blacked out. There's no other information available, eh?

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