These are tier 2 magazines sold in lots of 4pcs.
Heavy Barrel kit demo on post sample DPM
DP series Hammer and strut
DP series Hammer Spring
DP series Front Sight Replacement Base
DP series barrel
Cut your current trigger pull in half!
DPM original front receiver sections
DP series original firing pin
Torched Polish DPM receiver pieces
Booster device for DP series
Piston rod and tips for those that have the heavy barrel but not the rod with interchangeable tips