DPM Benelli M4 Super 90 Recoil Buffer System Stainless BENELLI -1. Included also are 4 additional external springs so the users can fine tune the firearm recoil with the different type ammunition and match their personal standards. Specifications for DPM Benelli M4 Super 90 Recoil Buffer System: Manufacturer: DPM Color: Stainless Gun Make: Benelli Gun Model: Benelli M4 Last Chance: Yes Package Contents: DPM Benelli M4 Super 90 Recoil Buffer System What firearm models does the manufacturer say DPM Benelli M4 Super 90 Recoil Buffer System is compatible with? The manufacturer suggests that DPM Benelli M4 Super 90 Recoil Buffer System is compatible with Benelli M4DPM BENELLI -1: Benelli M4 Super 90 Recoil Buffer System Stainless