DPMS Pistol Buffer Tube Assembly One Size. Specifications for DPMS Pistol Buffer Tube Assembly: Manufacturer: DPMS Gun Make: AR Platform Gun Model: AR-15 Size: One Size Package Contents: DPMS Pistol Buffer Tube Assembly What firearm models does the manufacturer say DPMS Pistol Buffer Tube Assembly is compatible with? The manufacturer suggests that DPMS Pistol Buffer Tube Assembly is compatible with AR-15DPMS DP51655134543: Pistol Buffer Tube Assembly One Size