DPMS AR-15 Detent/Spring Replacement Kit One Size. Specifications for DPMS AR-15 Detent/Spring Replacement Kit: Manufacturer: DPMS Color: One Color Gun Make: AR Platform Size: One Size Gun Model: AR-15 Package Contents: DPMS AR-15 Detent/Spring Replacement Kit What firearm models does the manufacturer say DPMS AR-15 Detent/Spring Replacement Kit is compatible with? The manufacturer says that DPMS AR-15 Detent/Spring Replacement Kit is compatible with AR-15DPMS DP307122: AR-15 Detent/Spring Replacement Kit One Size