This video focuses on PTG (Pacific Tool & Gauge) Chamber/Throat Function Gauges. The content appears to be a demonstration or explanation of how these specialized tools are used in firearm manufacturing, gunsmithing, or quality control. These gauges are crucial for ensuring the proper dimensions and tolerances of a firearm's chamber and throat, which directly impact accuracy and function.
This custom Mosin Nagant sniper rifle build integrates a UK-59 machine gun barrel and an AR-10 quad rail with a custom barrel nut. The rifle features a modified Remington 700 style bolt handle from PTG and a Norinco pistol grip. Range testing showed a 3.5-inch 9-10 shot group and a 2-inch 5-shot group with surplus 7.62x54r ammunition, with potential for improvement using handloads.
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