I can provide diameter and size and depth.right back!

three equal holes, one half inch diameter and six inches deep! All Identical!

Hi Eric,
I'm not sure if this is the reason for the holes in the Luger carbine stocks, but many competition shotguns have a similar butt stock arrangement. The purpose is for the addition of lead or tungsten weights to enable the gun to be balanced to the shooters taste.
Mark

NEVER!!!! No luger stock were ever weighted~ It worked well in 1902 why not in 1920, The stock was only to STEADY, needed by the German Kaiser Wilhelm to hunt~Using only One Hand~Due to deformed left arm! Its written he was very accurate hunting deer and wild boars!

A Site I Tripped Over While Grazing For Carbines http://www.historic-firearms.com/artillery-luger.html History

Nice theory but ignores the C96 which predated it, having a shoulder stock

Shoulder stocks aren''t the issue, The kaiser needed it to steady his aim. The holes may have been made to lighten his stock and more accurate his aim! But why was it not incorporated in every carbine there after! None of my German rifles have them including Mauser Sportsmodel 22 Hitler Youth Trainer~I Myself removed the butt plate and checked~

Totally different the purpose to store the gun!!! Much different from 3 small half inch holes!

Top 1920, bottom 1902~

Unless I messed up the mathematicss, all 3 holes would total about 1 1/3 ounces.

iI agree but to a one armed man I guess every ounce counts! BUT why are they there? Two purposes to hold on to the stock during fabrication or what else?? Germam have a reason for everything! Ask My Grandpa Bruning

A LONG ARTICLE BUT CONFIRM 'THREE WEIGHT REDUCTION HOLES', CONTAINED IN THE END OF ARTICLE, Land Of Borchardt Chilean Carbines, Having "Three Weight Reduction Holes" https://www.landofborchardt.com/1000...an.html#images

While Charles Whittaker's Land of Borchardt article is detailed and well written (as his stuff invariably is) his conclusions are based on empirical evidence and conjecture, not documentation. So his assertion that the holes are for weight reduction is precisely as valid as the what has been being posted here!
Ron

It might have been learned?
 

I'm sure it was a solution to a problem? It may have reduced cracks or checking, or possibly as a mounting fixture location, or as most seem to agree, just lightening up the whole unit... :cheers:... best, til...lat'r....GT

Maybe We Will Never Know For Sure! I Still Love Them And All Of You!! Thank You For All Of Your Interest!!! Discussion Closed Please~ TKS Eric