This new old stock 57mm M18 Throat Ring is a genuine U.S. military surplus component originally manufactured for the breech assembly of the M18 recoilless rifle. Identified by Part Number 7229511 and National Stock Number (NSN) 1010-00-722-9511, the throat ring is a critical alignment and sealing element in the chamber of the M18 system, ensuring proper interface between the round and breech during firing.

The 57mm M18 recoilless rifle was developed by the United States during World War II and fielded extensively through the Korean War. As one of the earliest man-portable recoilless anti-tank weapons, the M18 was highly valued by airborne and infantry units for its lightweight design, ease of use, and versatility in both anti-armor and bunker-busting roles. Its breech mechanism, including the throat ring, was engineered to withstand the unique pressures of recoilless firing while maintaining consistent ballistic performance.

Product Specifications:

Condition: New Old Stock (NOS)

Part Number: 7229511

NSN: 1010-00-722-9511

Compatibility: 57mm M18 Recoilless Rifle

Application: Breech assembly sealing and alignment component

Historical Significance:

The M18 represented a major shift in U.S. infantry anti-tank tactics during WWII and post-war engagements. Designed to deliver armor-piercing HEAT rounds from a man-portable platform, the M18 was instrumental in early anti-armor warfare and set the standard for recoilless rifle development throughout the Cold War. The throat ring (P/N 7229511) is a rarely found component that exemplifies the precision and durability of U.S. wartime ordnance manufacturing.

Ideal For:

Restoration of original M18 recoilless rifles
Reenactor or museum display support
U.S. military weapon system part collectors
Ordnance research collections or educational reference
Prop and set design for film or historical reenactments

Whether you're completing a rare M18 breech assembly or seeking an authentic WWII/Korean War-era part for display, this NOS 57mm M18 Throat Ring is a historically significant and hard-to-find item.

Approx length 3", Approx width 3", Approx height 1", Approx weight .6lbs.

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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