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Engineering- Research & Development

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[1] Strength of Fasteners

[2] Whittlin’ out a GRT-III Trigger

[3] Semi auto PCP pistol

[4] 0.156" Open Bolt Automatic for #4 Birdshot - Build Log

[5] Crosscut valve.

[6] Designing a valve/breech hybrid

[7] 12 gauge air cartridge

[8] Mechanical valve design

[9] would you thread the bottom of a bottle?

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