Area 419 Bolt Knob Defiance Tenacity/Elite Bolt Knob Adapter Stainless. These Bolt Handles - Parts from the fine people at Area 419 keep the Tenacity or Elite bolt knob knurled on your adapter. With two knurled surfaces either side of the integrated groove on the Area 419 Durable Bolt Knob Adapter you're able to gain control of your weapon and confidently load rounds onto the suppressor. The tactile Area 419 Ambidextrous Bolt Knob - Defiance keeps the smooth operation of the Tenacity or Elite bolt knob. The ambidextrous design is great for left and right hand shooters and the area 419 bolt knob is skeletonized to reduce weight. Invest in the Area 419 Elite Bolt Knob Adapter for a durable easy to grip bolt knob that you'll use often. Specifications for Area 419 Bolt Knob Defiance Tenacity/Elite Bolt Knob Adapter: Manufacturer: Area 419 Fabric/Material: Aluminum Condition: New Gun Make: CZ Gun Model: CZ 457 Hand: Ambidextrous Included Accessories: Standard Country of Origin: USA Package Contents: Area 419 Bolt Knob Defiance Tenacity/Elite Bolt Knob Adapter What firearm models does the manufacturer say Area 419 Bolt Knob Defiance Tenacity/Elite Bolt Knob Adapter is compatible with? The manufacturer suggests that Area 419 Bolt Knob Defiance Tenacity/Elite Bolt Knob Adapter is compatible with CZ 457Area 419 419-KNOBADT-DFSS: Bolt Knob Defiance Tenacity/Elite Bolt Knob Adapter Stainless