SENTRY MANUFACTURING GASLOCK CHARGING HANDLE PATROL FOR AR-308/SR25 The Sentry DEADLOCK Charging Handle brings the proven performance of GASLOCK™ technology to the AR10/SR25 platform, delivering enhanced reliability, superior gas mitigation, and rugged durability for demanding shooting applications. Featuring a patent-pending dual-locking system, the DEADLOCK helps prevent unintended charging handle movement caused by gear snags or incidental contact, reducing the likelihood of weapon malfunctions. Its innovative independent dual-latch design allows the charging handle to remain functional even if one wing becomes damaged, while balanced actuation forces provide smooth, consistent ambidextrous operation. A patented hard-stop gas key channel and full upper-receiver high-shelf geometry work together to significantly reduce gas blowback, improving shooter comfort when running suppressed or under high-volume firing conditions. Machined from 7075-T6 aircraft-grade aluminum and finished with a MIL-SPEC Type III hard-coat anodized coating, the DEADLOCK is built for long-lasting strength, corrosion resistance, and dependable field performance.