Now available is an authentic New Old Stock (NOS) .30-06 Caliber M1918A2 Butt Stock Buffer Spring, part of the recoil-absorbing system used in the iconic Browning Automatic Rifle (BAR) M1918A2. This spring is preserved in its original condition and exhibits light surface rust from long-term storage, which does not affect structural integrity and can be easily cleaned for restoration or display purposes.

Historical Context

The M1918A2 Browning Automatic Rifle, widely known as the BAR, was one of the most renowned automatic infantry weapons used by U.S. forces during World War II, Korea, and into the early Vietnam War. The M1918A2 variant featured a number of mechanical upgrades, including a revised stock assembly with a buffer spring system designed to reduce recoil and improve control during automatic fire.

This butt stock buffer spring, part number 5153131, was installed inside the buttstock assembly to dampen rearward bolt carrier movement. It helped stabilize the weapon during prolonged automatic bursts and contributed to the overall reliability and ergonomics of the BAR under combat conditions.

Product Details

Item: M1918A2 Butt Stock Buffer Spring
Condition: New Old Stock with light surface rust from storage
FSN: 1005-515-3131
Part Number: 5153131
Compatibility: U.S. .30-06 Cal M1918A2 Browning Automatic Rifle
Function: Absorbs recoil and controls bolt carrier return movement

Ideal For:

Browning Automatic Rifle restorers
Military small arms part collectors
Reenactors and WWII/Korean War display curators
Gunsmiths and advanced hobbyists
Museums and military firearm exhibits

Whether you're restoring an M1918A2 to period-correct condition or building a static display, this NOS buffer spring offers a rare and authentic component essential to the function and historical integrity of the BAR platform.

Approx length 1.5", Approx width 1", Approx height 1", Approx weight .1lbs.

Pictures are stock images of our inventory. Unless otherwise noted, you will not be receiving the exact item shown in the pictures. The pictures are representative of the item's general condition. The item you receive might be slightly better, or worse, condition than was shown in the pictures.

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