Born in Hungary As EX military guy he knows how to maintenance the weapons. The following tasks he is capable : Disassemble, clean, inspect, lubricate & reassemble. Remove corrosion and touch-up finish. Repair burred or damaged parts with files & stones. Replace defective parts with factory-made replacements, hand-fitting as necessary. Add after-market customizations: sling-swivels recoil-pads iron-sights scopes grip caps butt plates Repair and re-finish wooden stock parts. Checker or re-checker grip areas. Deepen or clean up worn or damaged engravings & markings. Re-crown damaged muzzles on a lathe. Repair dented shotgun barrels. Install (solder) or repair rib on shotgun barrels, or repair double-barrel assemblies. Measure & correct head-space dimensions. Check for excessive bore erosion. Troubleshoot and repair feeding, ejecting & firing problems. Test-fire guns with conventional loads to ensure proper operation. Fabricate wooden stocks to customer specifications and body dimensions. Fit same to existing receiver and barrel. Glass-bed actions to stocks to improve accuracy. Remove existing metal finish, and re-blue metal parts. Fabricate replacement parts from metal stock. Modify trigger-pull weight through careful stoning of trigger mechanism parts. Fire proof-loads through weapons to ensure sufficient strength of parts under over-load conditions. Replace worn barrels, which have fired so many rounds that they are no longer of the specified caliber (which leads to loss of accuracy). Change caliber or cartridge of existing rifle, by changing barrel, and modifying receiver. Re-cut rifling and change caliber of existing barrel. Design and build complete rifles by fitting stock barrels to stock receivers; fabricating or purchasing additional parts as needed, and fitting same to rifle. Fitting custom stock to the same. Design and build a complete rifle, shotgun, or combination gun from start to finish. (Combination guns, usually referred to as a "Drilling", is a highly complex hand-made long gun with several joined barrels combining both rifle and shotgun calibers and gauges sharing a common breech and buttstock.) The highest level examples of custom-made firearms usually start out as several pieces of blank steel stock or rough forged parts, a slab (stock blank) of walnut; steel tubes with rifled or smooth holes ("bores") drilled their length, and are usually hand made by highly skilled gunsmiths using nothing more than an occasional lathe, milling machine, heat treating furnace (for making springs, hardening parts to the proper hardness, and color case hardening) with the majority of roughing, fitting, and finishing done completely by hand using files, scrapers, abrasive paper and cloth, chisels and rasps. In general, gunsmiths develop and expand their skills through years of experience.