• Go to Cart

    Your shopping cart is empty!

1911-2011 5" Bull Barrel - Edward Rivera Special Edition

Click on an image to open Gallery

Product price
In Stock
In Stock
In Stock
In Stock
SKU: 1000083
EAN: 5213007221056
MPN Code: MS-1911/A1-5ER

DPM Mechanical Recoil Reduction System for 1911-2011 5" Bull Barrel

The DPM Mechanical Recoil Reduction System is a direct replacement for the stock recoil rod and does not require any modification to the pistol. As always, DPM products are designed and developed with user’s safety as a priority. Exceptional manufacturing and engineering using high-end materials.

  • 9 Adjustable User Settings. 

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.

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.

How it works


Power Rates Table 

Short Spacer With: 
Slide on the battery (idle position) 
Slide full open position (approx.)
Short Spring
5.0 lbs
14.3 lbs
Medium Spring
5.51 lbs14.3 lbs 
Long Spring
6.39 lbs14.3 lbs 
Medium Spacer With:Slide on the battery (idle position) 
Slide full open position (approx.)
Short Spring 5.29 lbs18.7 lbs
Medium Spring 5.84 lbs 18.7 lbs
Long Spring 6.5 lbs 18.7 lbs
Long Spacer With: Slide on the battery (idle position) Slide full open position (approx.)
Short Spring 5.51 lbs21 lbs
Medium Spring 6.06 lbs 21 lbs
Long Spring 6.60 lbs 21 lbs

Overall Advantages

  • 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

 Made in Hellas - EU.

Related Documents
Barrel Length (inches)5
Barrel TypeBull Barrel

Write a review for this product

Please login or register to review

Proud members of