Magwell Mount for FN 509 Series for SecureIt | Handgun Holder Storage Rack Color:Black - Perfect Fit: Works with

- Perfect Fit:  Works with a Glock G42 pistol

- Perfect Fit: Designed specifically for Springfield M1A magazines

Brügger & Thomet APC 223

though it may be a bit tight and require some filing to shorten the mount front to back

and Octane 45 are also available

Magwell Mount for FN 509 Series for SecureIt | Handgun Holder Storage Rack Color:Black - Perfect Fit: Works withSimple, Secure Mounting: Heavy duty mount holds firearm with ease. Simply slide the mount onto the louvers using the slots on the back. Note that the fit is intended to be snug, if needed you can use a rubber mallet to lightly tap the mount into place. Compatibility: Standard version is compatible with SecureIt wall panels, Agile safes, Answer safes, Akro Mils panels, and Quantum panels. The Plastic is compatible with plastic SecureIt gun safe panels,