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For competition rifles looking for a soft recoil impulse, use the lightweight stainless steel bolt carrier instead of a standard mil-spec carrier. It has significantly less reciprocating mass and helps to reduce felt recoil, allowing you to follow up with fast shots. The carrier has lightening cuts which reduce weight but not strength, and omit the forward assist serrations for optimum competition use. Extra-wide carrier rails provide additional surface area to improve bolt alignment and limit wear. The carrier key is already installed and staked, with a notch for a dust cover. To achieve the best performance and minimize the impact of wear, use only with J.P. Low-Mass Recoil Buffer, Speed Hammer, and Reduced-Power Spring Kit, available separately.