Ask the Community

Good afternoon to you!! Yes. The ProMag Magazine 5.7X28MM 55 Round Drum will fit your Diamondback DBX/DB57. The Diamondback DBX57 is designed to accept FN Five-seveN compatible magazines. Hope this helps, have a good rest of your weekend.

Hi John and welcome. Yes Sir it will. Just be sure and put it through it paces for reliability as Promag can be hit or miss but have an excellent replacement warranty. Cheers, stay safe and enjoy!

Yes, it will fit & function properly.

Hi John, yes sir, this fits the Diamondback DBX/DB57 Stay safe & have a great day!