Original credit goes to @JaiRaymond for Bug Report: M110SAS & Tariq.

The bug that affects the M110 seems to be isolated to the M110 but the bug affecting the Tariq is not unique to the Tariq and in fact every self loading weapon is affected by it, save for MG's, open bolt SMG's and the Garand.

When firing the gun, the third to last round will fire normally with the bolt cycling back. The second to last round will fire but the bolt wont cycle and when firing the final round, the bolt teleports to the locked open position.

Secondly, when using point shooting with the M16A4, the bolt is visibly missing.