SFOD-D M203 and KAC Stand Alone Launcher Now with Masterkey Video

[buffalowinter]

This is a close copy of a Delta M203 circa late '90's. The launcher is a 37mm Spike's with an M203 under barrel mount. The spike's launcher makes it non-NFA and a considerable savings over a $20K Colt M203. Aimpoint in Swan's mount, barrel pinned and welded at 16.1", one piece quad rail cut for M203 mount, KAC rail guards, and Colt side mount sling swivel.

Rifle shown with OPS INC (AAE) MK12 suppressor. Also, AN/PVS-5 NVG's, Steiner Compass Bino's, old school Redi-Mag mk1, and Post-Vietnam IR Illuminator.

 

[buffalowinter]

Knight's developed and sold a stock allowing the 203 laucher to be used seperately:

Standalone w/ Steel Stock PN:96251
Platform consisting of a variety of options including MILSTD 1913 rail segments, grip, and buttstock. Design to accommodate utilizing the M203 or Masterkey as a standalone weapon.
Weight: 3.74lbs (1.69kg) Length: 16″ (40cm) Application: Stand Alone Buttsock Module

I made a sort of copy using parts I had laying around

 

[buffalowinter]

And coming soon, the KAC Master Key.

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Knight's Armament Corp. "KAC" Master Key w/ mount.​

Knight's Armament Co.​

$1,995.00
The Masterkey is a door breaching shotgun system manufactured by Knight's Armament Company.

The Masterkey project was initiated during the 1980s to provide assault rifles with a potent built-in door breaching tool. Individual soldiers were often forced to carry a breaching shotgun in addition to their standard issue rifle, but the Masterkey removes this need. The system consists of a Remington 870 12 gauge pump-action shotgun mounted on an M16 or M4 assault rifle in an underbarrel configuration, much like the M203 grenade launcher. It has a 3-round internal magazine and can carry a fourth round in the chamber.

Work in progress. Waiting for the under barrel mount and NFA approval to cut the barrel to 10 inches. Progress so far:

 

[USMCSGT0331]

Damn dude, your builds are incredible! Can't wait to see more (hopefully a range report too)!

 

[buffalowinter]

 

[Aaros143]

Super cool. But can't imagine lugging that heavy bitch around

 

[Jackalope]

You building the Masterkey on a Special Field receiver? That’s what I used for my MCS-ish build.

 

[Charger442]

Is that a chalk load through the 203?

 

[buffalowinter]

Is that a chalk load through the 203?

yes

 

[buffalowinter]

You building the Masterkey on a Special Field receiver? That’s what I used for my MCS-ish build.

View attachment 8076189

My Master Key goes on an under barrel mount.

 

[roostercogburn98]

Is that a chalk load through the 203?

TPT round is what they are called for .mil. Loads of fun for lots of stuff. Great for getting cars to back off your 6 in a convoy.

 

[buffalowinter]

Form 1 finally came back. Door breaching video to follow.

 

[BScore]

 

[buffalowinter]

Well, the gun functions fine with low base shells but it absolutely locks up with high base buckshot and breaching rounds. I have to hone the chamber and put in a cross pin on the mount so it doesn't wobble.

 

[buffalowinter]

Well, the gun functions fine with low base shells but it absolutely locks up with high base buckshot and breaching rounds. I have to hone the chamber and put in a cross pin on the mount so it doesn't wobble.

Fixed it. Runs with anything.

 

[camocorvette]

Fixed it. Runs with anything.

That's awesome.