Super nice CETME C with it's live OG barrel and front trunnion.  Designed by ex-Nazi firearms engineers who fled Germany post WW2, this model was the blueprint for HK's later firearms development.  A good number (most) of CETME parts interchange with the HK91.  The last models produced in Spain were 7.62×51mm NATO, but earlier model used the 7.92×41mm CETME cartridge.  Pretty sure all these current offerings are NATO, but it would be wise to bore check the caliber before shooting.  These are nice kits; between NRA good and very good I'm guessing.  Nice wood.  Mags are dirt cheap.  Blued/parkerized finish mostly gone.   I can get a nice CETME receiver flat for 100.00 if interested.   All NFA rules apply.  Shipping is $20.00 anywhere in the 48 states where legal......thx!