DPM Springfiled Echelon 4.5in & 5.28in Berrel Mechanical Reduction System Stainless. As always DPM products are designed and developed with users safety as a priority. Exceptional manufacturing and engineering using high-end materials. Specifications for DPM Springfiled Echelon 4.5in & 5.28in Berrel Mechanical Reduction System: Manufacturer: DPM Color: Stainless Fabric/Material: Stainess Steel Gun Make: Springfield Armory Gun Model: Springfield Armory Echelon 4.5in Package Contents: DPM Springfiled Echelon 4.5in & 5.28in Berrel Mechanical Reduction System What firearm models does the manufacturer say DPM Springfiled Echelon 4.5in & 5.28in Berrel Mechanical Reduction System is compatible with? The manufacturer suggests that DPM Springfiled Echelon 4.5in & 5.28in Berrel Mechanical Reduction System is compatible with Springfield Armory Echelon 4.5inDPM MS-SPR/23: Springfiled Echelon 4.5in & 5.28in Berrel Mechanical Reduction System Stainless