• Close tolerance preserved: All material pre-hardened prior to machining to prevent changing tolerances during heat treat.
• Receiver machined from one piece of pre-hardened 416SS.
• Wire EDM-cut, full-length lug ways result in smooth bolt operation.
• Bolt machined from one piece of pre-hardened 4340 chrome moly and threaded for interchangeable knobs.
• Primary extraction design significantly increases initial extraction and ensures smooth bolt cycling.
• Bolt face diameters available for all standard and wildcat cartridges.
• Extractors are M-16 type.
• Designed for hinged floor plates, as well as detachable magazines and single shots.
• Control-round feed available.
• Multiple magazine well cuts are available for all of today’s popular magazine types including hinged floorplates, detachable boxes or single shot.

The Defiance Mutant is designed exclusively for the Eliseo RTM/RTS Chassis System, a custom fit that will work every time.  The Mutant is everything you’d expect out of a Defiance action.

• Integral recoil ring adds incredible rigidity and rock-solid fit with the Eliseo chassis system
• Chrome Moly Bolt
• Threaded for interchangeable knobs
• One piece bolt, multiple bolt-fluting options are available
• Primary extraction increases initial extraction and ensures a smooth bolt cycle
• M-16 style extractor
• Medium actions are typically equipped with a magazine well to accommodate the AI and AW detachable magazines.