These plates replace the top and the bottom cover of your box drive. All Box Drive magazine will come with these plates already installed. You still have the same load count of 140-150 rounds with this plate installed.
If you want the Gen1 plate, it is available FREE here https://mcsus.com/products/box-magazine-plate
Shipping July 10th, 2020
38393 38394 F24B01 F23A02