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Questions & Answers
Do you absolutely need the included tool for assembly and disassembly for field matenice?

for safety reasons yes it is necessary, as the spring may slip from your hands.

by DPM Systems, Verified Owner, September 5, 2025
Will this fit a staccato P 4.4 inch bull barrel?

Hello, no it is not compatible with any Staccato model. The compatible system is the SKU: 1000229.Thank you.

by DPM Systems, Verified Owner, November 27, 2025
Color:
Stainless
Fabric/Material:
Stainess Steel
Gun Make:
1911 Platform
Gun Model:
1911 5in
Condition:
Used
Condition Quality:
Excellent
Condition Details:
Inspect And Rebox
Last Chance:
Yes

Code: 3K0-FGR-RS1911ERE-MS-1911-A1-5-ER-EDEMO-RE-B

MPN: MS-1911/A1-5 ER-EDEMO

Product No Longer Available

Product Info for DPM 5in Bull Barrel Edward Rivera Mechanical Recoil Reduction System

This system works due to the multi spring intricate rod (3 springs) and controls the functionality of the pistol. The third spring which is contained within the rod controls the movement of the slide so it never rams on the frame.image

The system includes 3 different in length spacers, a spring plug, a red pressure plate tool, a metallic cup screw tool and 3 different external springs. The long spacer offers a heavy buffer effect, moving to shorter spacers a lighter buffer effect is being noticed.

Washers differentiate only the buffer force (slide full open position) and the external springs differentiate only the slide closed position (slide on the battery).

Detailed instructions for installation also included. The external springs are different in length, the long spring is heavy and the short is light so the shooter can fine tune the pistol on the opening and locking position (slide on the battery) according his/hers personal standards.

Features of DPM 5in Bull Barrel Edward Rivera Mechanical Recoil Reduction System

  • Faster follow up shots
  • Improved firing speed
  • Slide and Frame Protection
  • Elimination of jams
  • Significant recoil reduction
  • Better double-tap concentration
  • Better control and greater accuracy

Package Contents:

  • DPM 5in Bull Barrel Edward Rivera Mechanical Recoil Reduction System

.45 ACP Ammo

149 / 49
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Holsters

130 / 30
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DPM 5in Bull Barrel Edward Rivera Mechanical Recoil Reduction System Unavailable & Discontinued Models

List of Unorderable Models

  • USED, DPM 5in Bull Barrel Edward Rivera Mechanical Recoil Reduction System, Stainless, MS 1911 A1-5 ER , MPN: MS-1911/A1-5 ER-EDEMO , Code: 3K0-FGR-RS1911ERE-MS-1911-A1-5-ER-EDEMO-RE-B
  • DPM 5in Bull Barrel Edward Rivera Mechanical Recoil Reduction System, Stainless, MS 1911 A1-5 ER , MPN: MS-1911/A1-5 ER , UPC: 5213007221056 , Code: 3K0-FGR-RS1911ERE-MS-1911-A1-5-ER
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Last updated 2026-09-10 UTC.