Home CMMG AR-15 barrel and handguard deflection

AR-15 barrel and handguard deflection

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This video demonstrates the differences in the deflection when 3lbs of force is applied to either the handguard or the barrel while the upper receiver is fixed in the 2300lb milling machine with a dial indicator on the table to measure the actual deflection. The barrel in the test is an M4 contour CMMG 22lr barrel. The handguard in the test is a Nordic Components small diameter freefloat handguard.

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3 COMMENTS

  1. That is equal to 3.89 inches at 600 yards (NATO 5.56mm effective range).

    arctan(0.004 inches/22 inches)=0.00018 radians

    (0.00018 radians)(600 yards)(3 ft/yard)*(12 inches/ft) = 3.89 inches

    What are we supposed to conclude from this?

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