Fortis Manufacturing Magazine Catch And Release FDE Anodize. Easily installs in seconds and instantly upgrades your rifle. This upgrade is CNC machined from a solid piece of 6061-T6 aircraft grade aluminum or 303 Stainless Steel. We added texture and engraved our logo for just the right touch of function and styling. Magazine rod is 303 Stainless Steel for further added durability. Specifications for Fortis Manufacturing Magazine Catch And Release: Manufacturer: Fortis Manufacturing Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Weight: 0.33 oz Condition: New Features of Fortis Manufacturing Magazine Catch And Release 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 Ultra lightweight Package Contents: Fortis Manufacturing Magazine Catch And Release Mag Button Mag Catch Mag Catch Rod Mag Spring 17-7 SS What firearm models does the manufacturer say Fortis Manufacturing Magazine Catch And Release is compatible with? The manufacturer says that Fortis Manufacturing Magazine Catch And Release is compatible with AR-15Fortis Manufacturing AR15-BMCR-6061-FDE: Magazine Catch And Release FDE Anodize