This New Old Stock 40mm M129 Outer Drum End Plate Assembly is a rare collectible that captures the technological advancements in rotary-wing aircraft armament. Whether for display, educational use, or restoration, it provides a tangible connection to the powerful support systems that defined military aviation in the Cold War.
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Acquire an authentic component of advanced military aviation weaponry with this New Old Stock (NOS) 40mm M129 Outer Drum End Plate Assembly, part number 11689713. Developed as a critical part of the M129 grenade launcher, this end plate assembly was essential to the operation and reliability of the launcher’s magazine feed system. The M129 was a pivotal improvement over its predecessor, the M75, offering a significantly increased rate of fire—up to 400 rounds per minute compared to the M75’s 225 rpm—along with reduced recoil and enhanced mounting.
Key Features:
Designed for M129 Grenade Launcher: The M129 was an upgraded grenade launcher used widely in U.S. military rotary-wing aircraft, particularly the AH-1 Cobra series, including the AH-1G, AH-1Q, MOD AH-1S, and production AH-1S models. This launcher provided powerful, high-rate fire support from the air, making it an integral part of close air support missions.
Historical Relevance in Military Aviation: The M129 was notably featured in the M28 series armament subsystem on various Cobra helicopter models and was also used on the AH-56 Cheyenne via the XM51 subsystem. Its superior firepower and smoother recoil made it invaluable in rapid-response scenarios, supporting U.S. forces in high-stakes combat situations.
New Old Stock Condition: Preserved in original, unused condition, this outer drum end plate assembly retains its historical authenticity, making it ideal for display, collection, or restoration projects focused on Cold War-era and Vietnam-era military aviation technology.
Product Details:
Condition: New Old Stock, unused and well-preserved
Part Number: 11689713
Compatibility: Specifically designed for use with the M129 grenade launcher
Collector’s Appeal: Perfect for military collectors, aviation historians, and restoration experts who value genuine components from iconic military aircraft weapon systems
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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