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PROOF Research offers pre-fit barrels made of carbon fiber and steel for the Defiance Ruckus that can be effortlessly installed with only a few specialized tools. These barrels are already chambered and threaded for a hassle-free setup. Once installed, check the headspace using proper gauges and head to the range for exceptional accuracy and performance.

Apart from being pre-fit, these barrels also offer significant advantages over traditional steel barrels. Carbon fiber barrels are 64% lighter, promote better heat dissipation, and are wrapped in aerospace-grade carbon fiber that has an exclusive matrix resin.

It should be noted that these PROOF drop-in barrels are optimized only for Defiance Ruckus, Tenacity, and Anti actions with the 'Recessed' bolt nose option. They are not compatible with actions that have cone, flat, or control round feed bolts.