DPMS AR-10 Bolt Catch Assembly One Size. Includes Bolt Catch Bolt Catch Detent Bolt Catch Detent Spring and Bolt Catch Roll Pin. DPMS Panther Arms is your source for AR-10 parts accessories and firearms. For best results DPMS recommends only using DPMS AR-10 or PSA PA10 parts with their uppers and lower receivers. DPMS does not recommend using other manufacturers parts in their products. Specifications for DPMS AR-10 Bolt Catch Assembly: Manufacturer: DPMS Gun Model: AR-10 Color: Black Gun Make: AR Platform Package Contents: DPMS AR-10 Bolt Catch Assembly What firearm models does the manufacturer say DPMS AR-10 Bolt Catch Assembly is compatible with? The manufacturer suggests that DPMS AR-10 Bolt Catch Assembly is compatible with AR-10DPMS DP51655128291: AR-10 Bolt Catch Assembly One Size