This video presents a rigorous SOCOM torture test on the HK MR556A4 upper receiver, evaluating its performance and accuracy under extreme firing conditions without a chrome-lined barrel. The test involves 1920 rounds fired over 8 cycles of the SOCOM Firing Schedule, with controlled cool-down periods for both the barrel and the Dead Air Lazarus 6 suppressor. The description also highlights a positive experience with Dead Air's customer service following a minor baffle strike due to user error. Various ammunition types were used for accuracy testing, and a discount code for Bauer Precision is provided.
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