DPMS USGI Trigger Guard One Size. Specifications for DPMS USGI Trigger Guard: Manufacturer: DPMS Gun Make: AR Platform Gun Model: AR-15 Color: Black Package Contents: DPMS USGI Trigger Guard What firearm models does the manufacturer say DPMS USGI Trigger Guard is compatible with? The manufacturer says that DPMS USGI Trigger Guard is compatible with AR-15DPMS DP1683: USGI Trigger Guard One Size