Duo Block 9/45 Gen 2
Building an AR that takes Glock magazines? Well here is your ticket! Like the DB1015, this block can be used for two different platforms. The Glock small frame (9mm/40cal) flip it over and build or work on your Glock large frame (45acp/10mm)! Tightest lockup of any block out there without having to “fit” it to work! Stop ruining your mags!!
*Fits most receivers