Uncle Mikes magazine cap swivel set has a factory magazine cap with the swivel base already installed. Just unscrew the factory magazine cap and replace it with the new cap. For the buttstock, a 3/4″ wood screw swivel base is included, along with two super swivels with Tri-Lock.
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Magpul MAG1071-BLK MOE Enhanced Selector Kit made of Polymer with Black Finish for HK MP5
$47.45
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