5KU Type-1 Aluminum Magazine Base for 5.1 Hi-Capa Series Airsoft GBB Pistol Magazines
(Color: Black)

"perfect fit for Tokyo marui hi capa 5.1 mags!

"First off, these things are some of the best looking mag plates I've seen. The quality is excellent.

The only issue I've come across is pistol compatibility. They are flawless in my WE, but are too tall for my Armorer Works so the mag catch will not engage. If you don't mind the possibility of some Dremel work, they're some of the best I've seen.

Performed drop tests at 3ft and 6ft on concrete and had minimal damage, only some paint was scratched off.