Fortis Manufacturing Magazine Release Button Only Billet AR 15/AR 10 Case Hardened. Easily installs in seconds and instantly upgrades your rifle. This upgrade is CNC machined from a solid piece of 303 Stainless Steel. We added texture and engraved our logo for just the right touch of function and styling. Specifications for Fortis Manufacturing Magazine Release - Button Only: Manufacturer: Fortis Manufacturing Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Condition: New Features of Fortis Manufacturing Magazine Release - Button Only Same low profile as a mil-spec magazine button Low profile prevents from over-throwing the magazine catch Full aggressive front serrations while having full-length threaded internals Package Contents: Fortis Manufacturing Magazine Release - Button Only What firearm models does the manufacturer say Fortis Manufacturing Magazine Release - Button Only is compatible with? The manufacturer suggests that Fortis Manufacturing Magazine Release - Button Only is compatible with AR-15 AR-10Fortis Manufacturing AR15-MB-CS-CH: Magazine Release Button Only Billet AR 15/AR 10 Case Hardened