4 Inch Universal Mounting Platform UMP - Ergo Grips
Ergo U.M.P. Universal Mounting Platforms feature a standard Picatinny M1913 configuration. Mounting does not require alteration of AR handguard heat shields. Includes low profile rail covers and socket head mounting bolts with special flat nuts for an unobtrusive mount. UMP Mounting Rails are made in the US from anodized flat black aluminum. ER4354 Rail Dimensions: 4 " x .400 "
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