After the Polish-Soviet War ended in 1921 Poland, like most European countries, attempted to standardize it's small arms from the myriad of weapons acquired during the turbulent years of WWI and afterwards.  One project undertaken towards this end was the conversion of Mosin Nagant M91 rifles to 8mm carbines. Several variations are known and include the WZ91/98/23, WZ91/98/25, and WZ91/98/26.  The "91" is from the Russian M91, the "98" is from the German K98 which the caliber and nosecap/bayonet lug is based on, and the "23", "25", or "26" is for the year of adoption.  The most often encountered of these uncommon variations is the M91/98/25.   This example is owned by "GoShoot" of Gunboards.com who provided the pictures and was kind enough to allow their use here.   The barrels are new and marked with the actual caliber, in this case 7,93.   Parts are renumbered to match as seen on the buttplate, barrel, receiver, and floorplate.

The bolt face is modified for the smaller 8mm cartridge's rimless case head.  The receiver of this rifle is from a Remington M91.

The barrel has two steps, before and after the bayonet lug which is numbered to match.   The magazine is altered for the 8mm cartridge and too accept a modifed interrupter.

The stock is serial numbered and has the rear sling slot filled.  In it's place a sling swivel is attached to the underside of the butt.

The front sling attachment point is a hanger bolted through the fore end of the stock.   The stock is filled in the chamber area with a numbered patch.  This is necessary because the size of the chamber required for the 8mm is much smaller than that of the 7.62x54r.