CA Magazine Block Pin Kit - Stainless Steel Pin, Locking Set Screw and Spring
Please be advised this does not come with a jig for installation.
Modification of your firearm is required. To ensure proper operation, a qualified gunsmith is recommended for installation.
When installed properly in your firearm, the pin blocks the magazine release until the rear pin is removed and the upper receiver is lifted upward and away from the lower receiver.
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