I. G. 71/84 Mauser stock question

[Steppenwolf]

Hi, I have a 71/84 that someone shortened the stock on. I plan to replace the fore end with new wood but need to know one thing. What is the distance from the muzzle to the rear of the bayonet lug? Not the nosecap the lug itself. TIA

 

[MiG25]

4 1/4" from muzzle to the flat on rear of the lug.

 

[Steppenwolf]

Mig25, thank you so very much