At a glance: Allows for safe removal of the magazine disconnect Facilitates proper magazine alignment Shields sear and hammer from debris, boosting performance While the RugerA(R) MKIV is already a popular pistol for rimfire shooting sports, even a good gun can be made great! The new TANDEMKROSS "Blast Shield" MKIV Magazine Disconnect Replacement is an easy upgrade for your RugerA(R) MKIV or MKIV 22/45, allowing for the safe removal of the magazine disconnect and offering other great benefits to boost performance for competitive shooting or weekend plinking. The unique design of the MKIV magazine disconnect replacement not only allows the gun to Mfg: Tandemkross