From the Vault: M16A1 + M203 and AR-15 + Wilson Shotgun

Published on October 14, 2022
Duration: 4:10

This video showcases unique firearm configurations, including an M16A1 with an M203 grenade launcher and an AR-15 variant fitted with a Wilson Arms 870 shotgun, a variant of the 'Master Key' system. The discussion highlights the breaching capabilities of these underbarrel shotgun systems and the differences in mounting mechanisms compared to the M203.

Quick Summary

The Master Key system and its variants, such as the Wilson Arms 870, were designed for breaching doors. While the M203 grenade launcher mounts via a barrel profile, the Wilson 870 attaches to the bayonet lug and requires a modified lower receiver pin, making it less easily detachable. Both can be used as standalone units with a stock.

Chapters

  1. 00:07Introduction
  2. 00:09Rock Island Auctions Visit
  3. 00:14Three Guns and Destructive Devices
  4. 00:25Transferable Machine Guns
  5. 00:37M203 Grenade Launcher Overview
  6. 00:47Wilson Arms 870 Underbarrel Shotgun
  7. 00:57Master Key vs. Wilson Arms 870
  8. 01:28M203 Mounting System
  9. 01:36Wilson Arms 870 Mounting System
  10. 01:59Receiver Pin Modification
  11. 02:15Standalone Use Capability
  12. 02:36Bulk and Practicality
  13. 02:47Early Encounters with Master Key
  14. 03:13Breaching Applications
  15. 03:32Conclusion from The Vault
  16. 03:41Unique Firearm Accessories
  17. 03:46Thanks to Rock Island Auctions
  18. 03:52Call to Action: Like and Subscribe

Frequently Asked Questions

What is the primary function of the Master Key system and its variants like the Wilson Arms 870?

The Master Key system, including variants like the Wilson Arms 870 mounted on an AR-15, was primarily designed for breaching doors. It provides a close-quarters destructive capability to overcome obstacles.

How does the M203 grenade launcher mount compared to the Wilson Arms 870 shotgun mount?

The M203 typically mounts to a barrel profile using a dedicated mount, allowing for easier detachment. The Wilson Arms 870 variant attaches to the bayonet lug and requires a modified lower receiver pin, making it less readily detachable.

What makes the M203 and Master Key systems unique in terms of their use?

Both the M203 mount and the Master Key system can be adapted for standalone use by adding a stock, allowing them to function independently of a host firearm.

What are the practical considerations when using an underbarrel shotgun like the Wilson Arms 870?

While effective for breaching, an underbarrel shotgun significantly increases the overall bulk of the host firearm. In many scenarios, carrying a separate breaching shotgun might be more practical due to this added size.

Related News

All News →

More Tactical & Gear Videos You Might Like

More from Brownells, Inc.

View all →