K31

I put a 4 X14 Nikon scope on my K31, using the excellent Swiss Products side mount. I added the Swiss Products muzzle brake too, and really noticed a reduction in recoil. It's not much more than my Swede M96 for recoil now. Haven't tried more than 100 meters, but it shoots under 1"with GP11. Wear good hearing protection if you brake the gun. It makes quite a bang.

Great to hear your experience. I just put a 2x7 Bushnell on my recently acquired 1943 K31 with a clamp on swiss mount. Best group I had been able to manage with relatively small 20 round sample outing was just under 2 inch groups at 100 yards. Not much if any improvement over irons sights at the moment. Looking forward to tightening that up a little with some more shooting when it warms up. I don't think I want it as loud as my SVT. I think I will forgo the muzzle brake :) .
 
check 1944 serial numbers

Nope. You are having your chain jerked.

Walnut has the edge on beech, but I have high dollar furniture made of both woods. The same goes for the stocks on the K31 - pre-44, usually walnut unless replaced by beech. Post-44 usually beech unless replaced by old stocks of walnut. The iffy-alloyed composition of SOME 1944 operating rods was due to a wartime shortage of chromium, I'd bet that most had been replaced way before you ever clapped eyes on one. In any case, IF the highly unlikely event occurs that you have such an op rod that has developed a crack in the lug that engages in the cam track of the bolt, then around $35 will get you a new one from Guisan.

tacYou choose.


tac
there is a list of problematic serial # for bad metallurgy on SwissArms forum, the part looks different too.
 
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