Some trigger time with the SIG AMT, a semi auto version of the SIG SG 510 or Sturmgewehr 57. This roller delayed blowback system was adopted by the Swiss Army in 1957 and later replace by the SIG 550.
C96 Mauser Broomhandle "Red 9" Pistol in 9mm
300 Blackout Pistol
Simple HeatOil Bluing Method
Saiga 12 Combat Shotgun with 922r conversion
Reloading RCBS X-Die Complete Tutorial