Forged 7075-T6 Aluminum 
Hardcoat Anodizing: MIL-A-8625F, Type III, Class 2
Mil-spec Diameter PA15 6-Position Receiver Extension
DPMS Panther Polished Hammer/Trigger
DPMS Custom Panther Over-Molded A2 Grip, Black
Magpul MOE Stock, Black
Twice Staked M4 Lock Nut
DR10 Short Buffer & DR10 Buffer Spring
Caliber: .308

The DPMS DR-10 complete lower receivers are functionally compatible with the PSA Gen1 and Gen2 upper receivers, however, we recommend matching to DPMS DR-10 or PSA Gen3 uppers for the best appearance and performance.  

The DR10 platform does not share common design or mil-spec tolerances between manufacturers like the AR-15 platform. As a result, there can and will be subtle differences in the parts kits of various manufacturers. Some parts, like the fire control group, are shared with the AR-15 platform to preserve the options for upgrading. We recommend only using DPMS DR-10 or PSA PA10 parts with our uppers and lower receivers for the best results. We do not recommend using other manufacturers' parts in our products.