King Cobra 9 Megapack

about

 

The King Cobra 9 is a 9mm pistol-caliber carbine built with a minimum of firearms components, utilizing a custom bolt design and a radically new approach to recoil management in homemade firearms: the deleted-blowback system. This system, developed and fine-tuned over a two year development cycle, has resulted in the most advanced 3D-printed firearm released to date, and one that competes with professionally produced PCCs.

The KC9 was jointly developed by Derwood and Mussy. Derwood, consistently one of the best guncad developers since the earliest days of the movement and designer of the MP-1, AP-9 (upon which the FGC-9 is based), WTF-9 and MOD-9, contributes the innovative DBB system; Mussy, another of the earliest guncad developers and one of the most prolific, contributes dozens of interchangeable parts, including several retainer, endcap, magwell designs and more. The enormous variety of parts means that you can customize your KC9 as you see fit.

At time of release, the KC9 requires a G17 barrel, an AR-15 FCG and a custom bolt available from 3ddefense.net. All other hardware can be sourced from a hardware store, or from a hardware kit available also from 3ddefense.net.

Links to purchase hardware:

Purchasing this hardware directly supports the developers of the King Cobra 9. Each KC9 downloaded from DEFCAD also supports these developers. Thank you for your support!

This megapack contains both the base King Cobra 9 model as well as several KC9 mods such as the KC9S, which modifies it to accept a Suomi drum magazine, or the KC9XL, which modifies the KC9 into a rifle configuration. Also included are dozens of alternate versions of the core parts and many more accessories and peripherals to complement the project. These will also be featured as independent projects on DEFCAD in the future, but the megapack provides one convenient link to access them all. This megapack will be kept up to date as new mods and accessories are developed for the platform.

files

File Extension
KING COBRA 9 RELEASE PACKAGE 1.0.3.zip zip

versions

Version: 1.0.3 latest

- Added Derwood's LRHO mod
- Added phoryu and coop's KC9 AR9 mods

Version: 1.0.2

Base Model:

  • Added new charging handle sleeve (6.25) to base model, moved old sleeve to an Old Version folder. This new charging handle sleeve is slightly slimmer and chamfered, should fit better in the upper.

Mods:

  • Added Wicked Mainahs Kobra Ump Mod R 2.1 to Mods
  • Added Wicked Mainahs Kobra XM8 Mod to Mods

Accessories:

  • Added Br0letariat retainers to Accessories > Barrel Retainers
  • Added Br0letariat handle set to Accessories > Charging Handles
  • Added Folding Kak Brace V 2.1  Now with Twice The KAK! to Accessories > Endcaps + Braces and Stocks > Braces and Stocks (moved old v2.0 to an "older versions" folder)
  • Added MeatMag 9mm King Cobra 3dition to Accessories > Magazines (created this folder)
  • Added Br0letariat Less X-Treme Folding Brace Body.stl to Accessories > Endcaps + Braces and Stocks > Braces and Stocksk
  • Added Br0letariat snakeskin strips.stl to Accessories > Adornments and Plates
  • Added handstop_superlite_magwell to Accessories > Handstops (created this folder)
  • Added King Cobra 3dition DUST COVER to Accessories > Dust Covers
  • Added Set Sleeves to Accessories > Charging Handles
  • Added V_retainer snake rail covers to Accessories > Rail Covers (created this folder)
  • Added Sauerkraut Endcap-KC9 (1).stl to Accessories > Endcaps + Braces and Stocks > Standalone Endcaps
  • Added XL Railed Ret rails X2.stl to Mods > KC9 XL
  • Added KindError Charging Handles to Accessories > Charging Handles
  • Added Rusty Shackleford Charging Handles to Accessories > Charging Handles
  • Added Rusty Shackleford End Cap Button - Enhanced.stl to Accessories > Endcaps + Braces and Stocks > Braces and Stocks > DOGENADO Endcap and Brace
  • Added Rusty Shackleford Magazine Coupler to Accessories > Magazines

Version: 1.0.1

- Removed the magwells X and Y from the base package, replaced with magwell C and superlite. This is because of possible feeding problems experienced after release from magwells X and Y. See README in the Base Model folder for details
- Added assembly guide
- Removed duplicate "I_Love_Lamp" dust cover from accessories folder

Version: 1.0.0

Initial release

about

 

The King Cobra 9 is a 9mm pistol-caliber carbine built with a minimum of firearms components, utilizing a custom bolt design and a radically new approach to recoil management in homemade firearms: the deleted-blowback system. This system, developed and fine-tuned over a two year development cycle, has resulted in the most advanced 3D-printed firearm released to date, and one that competes with professionally produced PCCs.

The KC9 was jointly developed by Derwood and Mussy. Derwood, consistently one of the best guncad developers since the earliest days of the movement and designer of the MP-1, AP-9 (upon which the FGC-9 is based), WTF-9 and MOD-9, contributes the innovative DBB system; Mussy, another of the earliest guncad developers and one of the most prolific, contributes dozens of interchangeable parts, including several retainer, endcap, magwell designs and more. The enormous variety of parts means that you can customize your KC9 as you see fit.

At time of release, the KC9 requires a G17 barrel, an AR-15 FCG and a custom bolt available from 3ddefense.net. All other hardware can be sourced from a hardware store, or from a hardware kit available also from 3ddefense.net.

Links to purchase hardware:

Purchasing this hardware directly supports the developers of the King Cobra 9. Each KC9 downloaded from DEFCAD also supports these developers. Thank you for your support!

This megapack contains both the base King Cobra 9 model as well as several KC9 mods such as the KC9S, which modifies it to accept a Suomi drum magazine, or the KC9XL, which modifies the KC9 into a rifle configuration. Also included are dozens of alternate versions of the core parts and many more accessories and peripherals to complement the project. These will also be featured as independent projects on DEFCAD in the future, but the megapack provides one convenient link to access them all. This megapack will be kept up to date as new mods and accessories are developed for the platform.

Purchase Bolt Purchase Hardware Kit Download

creators

organization

Metrics

Views

165.4K

Downloads

4.1K

Project Info

release date

Jan 31, 2022

artifact type

Printable project

library category

Printable Firearms

fabrication method

Hybrid

fabrication tool

3D Printer

release country

United States

language

English

license

Creative Commons Attribution-NonCommercial-NoDerivatives 4.0

Firearm Info

types

Pistol, Pistol-Caliber Carbine

platform

KC9

caliber

9x19mm

version hash

QmQiFBMrVaxBL8bqGwvWST29TFWTErdyBL9LbzdabMX5mN

files

File Extension
KING COBRA 9 RELEASE PACKAGE 1.0.3.zip zip

versions

Version: 1.0.3 latest

- Added Derwood's LRHO mod
- Added phoryu and coop's KC9 AR9 mods

Version: 1.0.2

Base Model:

  • Added new charging handle sleeve (6.25) to base model, moved old sleeve to an Old Version folder. This new charging handle sleeve is slightly slimmer and chamfered, should fit better in the upper.

Mods:

  • Added Wicked Mainahs Kobra Ump Mod R 2.1 to Mods
  • Added Wicked Mainahs Kobra XM8 Mod to Mods

Accessories:

  • Added Br0letariat retainers to Accessories > Barrel Retainers
  • Added Br0letariat handle set to Accessories > Charging Handles
  • Added Folding Kak Brace V 2.1  Now with Twice The KAK! to Accessories > Endcaps + Braces and Stocks > Braces and Stocks (moved old v2.0 to an "older versions" folder)
  • Added MeatMag 9mm King Cobra 3dition to Accessories > Magazines (created this folder)
  • Added Br0letariat Less X-Treme Folding Brace Body.stl to Accessories > Endcaps + Braces and Stocks > Braces and Stocksk
  • Added Br0letariat snakeskin strips.stl to Accessories > Adornments and Plates
  • Added handstop_superlite_magwell to Accessories > Handstops (created this folder)
  • Added King Cobra 3dition DUST COVER to Accessories > Dust Covers
  • Added Set Sleeves to Accessories > Charging Handles
  • Added V_retainer snake rail covers to Accessories > Rail Covers (created this folder)
  • Added Sauerkraut Endcap-KC9 (1).stl to Accessories > Endcaps + Braces and Stocks > Standalone Endcaps
  • Added XL Railed Ret rails X2.stl to Mods > KC9 XL
  • Added KindError Charging Handles to Accessories > Charging Handles
  • Added Rusty Shackleford Charging Handles to Accessories > Charging Handles
  • Added Rusty Shackleford End Cap Button - Enhanced.stl to Accessories > Endcaps + Braces and Stocks > Braces and Stocks > DOGENADO Endcap and Brace
  • Added Rusty Shackleford Magazine Coupler to Accessories > Magazines

Version: 1.0.1

- Removed the magwells X and Y from the base package, replaced with magwell C and superlite. This is because of possible feeding problems experienced after release from magwells X and Y. See README in the Base Model folder for details
- Added assembly guide
- Removed duplicate "I_Love_Lamp" dust cover from accessories folder

Version: 1.0.0

Initial release

The files shown on this site are only available to U.S. Persons, as defined at 22 C.F.R. 120.15. The files are also not available to persons outside the United States or to residents of and persons in the State of New Jersey, with the exception of Federal Firearms Licensees.

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