PEW Science Omega Metric analysis in the subsonic 9x19mm combustion routine While using the HK SP5-A2 and SP5K-PDW weapon systems is underway. Note the PEW Science HK SP5-A2 possesses an 80-deg locking piece in its bolt copyright group, which may lead to lessen bolt copyright group rearward velocity than systems possessing typical angle locking ite… Read More