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Sig Sauer M400



We didn’t set out to make just any M4. Instead, we used the innovation, performance and attention to detail that defines other SIG rifles to evolve the platform. The result is the SIGM400, a superior system offering advanced features available right out of the box that were once only found on the after-market. Accurate, lightweight and crafted from the finest components, the SIGM400 sets the new standard for direct-impingement AR-15’s.