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bushmaster ar breakin?
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  1. M16 AR15
    My department got two brand new Bushmaster ARs (generic M4 profile, semi-auto). I checked the barrel nut torque and they were both north of 40lbs. Everything else looks normal. Well factory oiled (we did not clean & re-lube ). Bench functions seemed very stiff/tight, triggers seem gritty &...
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