ERGO Tactical Deluxe Grip Plug Black. Securely press fits into the bottom of the Tactical Deluxe Grip and helps prevent debris from lodging in the cavity of the grip. It also functions as a shock-absorbing pad to protect the grip when setting the rifle down on hard surfaces. Specifications for ERGO Tactical Deluxe Grip Plug: Manufacturer: ERGO Gun Make: AR Platform Gun Model: AR-15 AR-10 Condition: New Package Contents: ERGO Tactical Deluxe Grip Plug What firearm models does the manufacturer say ERGO Tactical Deluxe Grip Plug is compatible with? The manufacturer says that ERGO Tactical Deluxe Grip Plug is compatible with AR-15 AR-10ERGO 4112-BK: Tactical Deluxe Grip Plug Black