3.5" M20 / M20B1 Bazooka Sight Helical Compression Spring
$20.00
In stock
SKU
3.5" M20 / M20B1 Bazooka Sight Helical Compression Spring
Toggle Nav
The #1 Online Source for Military Museum Displays • Movie Props • Training Aids • Historical Artifacts
This 3.5" M20 / M20B1 Bazooka Sight Helical Compression Spring is a genuine new old stock (NOS) U.S. military component, manufactured for the optical sighting system used on the iconic M20 series Bazooka anti-tank rocket launchers. Part Number 7141999, NSN 1055-00-731-1789, and FSN 1055-731-1789, this spring is a vital internal part of the sight assembly, providing the necessary compression tension for accurate alignment and operational reliability.
The M20 Bazooka was a critical advancement in American anti-armor infantry weapons during and after World War II. Introduced in the late 1940s, the M20 3.5" rocket launcher—nicknamed the "Super Bazooka"—replaced the earlier 2.36" M1A1 model to combat the growing threat of Soviet and late-war German armor. The upgraded system featured improved optics and mounting hardware, including a refined sight mechanism in which this spring played a key role.
Product Details:
- Condition: New Old Stock (NOS)
- Part Number: 7141999
- NSN: 1055-00-731-1789
- FSN: 1055-731-1789
- Compatible With: M20 and M20B1 3.5" Rocket Launchers
- Function: Provides spring tension to the optical sight mechanism
- Status: Authentic U.S. military surplus item
Historical Context:
The M20 and M20B1 Bazooka were widely issued to U.S. troops during the Korean War and were exported to NATO allies during the Cold War. The weapon system was notable for its improved armor penetration, and the precision of the sight system was essential for target engagement. This helical compression spring was installed in the rear portion of the launcher's iron sight assembly, ensuring stable sight alignment even under rough field conditions.
Ideal For:
- Restoration of M20 or M20B1 Bazookas
- Collectors of Cold War-era U.S. infantry weapons
- Military museums or educational displays
- Spare parts inventories for historic weapon systems
- Reenactors and militaria enthusiasts seeking authentic accessories
Whether you're restoring a Cold War anti-tank launcher or building out a historically accurate U.S. infantry weapons collection, this NOS 3.5" Bazooka Sight Helical Compression Spring is a rare and essential component to have on hand.
Approx length .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.
Please visit our page about order lead times here: Order Lead Times