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All of Blackheart International's three lower receiver platforms—the BHI SPR, BHI SSA and BHI MIL-SPEC—were developed around the purpose-built BHI-15 lower receiver. This precision-engineered ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. DALLAS (AP) — A subtle design feature of the ...