The Orca is an AR-15 rifle with a 3D printed upper and lower system. It is a preeminent member of a new generation of printed ARs that support printing the upper receiver as well as the lower. The goal of the project is to print as much of the AR-15 as possible, without compromising the performance.
The following components that would be on a factory AR-15 have been replaced by printed or non-firearm parts, or made unnecessary:
- Upper
- Lower
- Handguard
- Buffer tube
- Barrel nut
- Stock
- Grip
- Takedown pins
- Buffer retainer
The Orca design has been extensively tested by the guncad community and has proved its worth.
Purchase this kit to obtain all parts required to build an Orca of your own.


Dealer Price Spindle Fan
US Palm AK Pistol Grip – FDE
AR-15 80% Lower Receiver – Forged
G0 Non-Frame Hardened Steel Block (for GG3-S)
KAK Complete AR15 Upper Receiver – 7.62×39 – 16″ Barrel – 13″ MLOK
Mastering Fusion 360: 28 Step-By-Step Projects for Beginners in 3D Printing, Prototyping, and Making
#22 Jobber Drill
Dealer Price Collet 1/4in
Matrix Arms Foxtrot 9.5″ AR-15 M-LOK Free Float Handguard – Black
API Pistol Storage Bag
G0 Build Kit With Grip Module
API Tactical Rifle Storage Bag
Sig Sauer® P320™ | Lower Parts Kit – 9mm/.40/.357
10YR DD Magazine Collection – USB
Plastikov v3 – USB
Wilson Combat Full Grip Module P320 Black
Rifle ONLY Stabilizing Brace
G0 Fixture Plates
Sylvan Arms GcB100 AR-15 to 9mm Glock Conversion Block
PMAG® 10 GL9 (G19) magazine
3DP90 – USB
G17.2 Aluminum Rail Kit
ARMASPEC Anti-Walk Trigger/Hammer Pins
AR-308 Upper Only
LWRC Compact Adjustable Stock – BLACK | AR-15
5 PACK – WBP Poly AK47 30rd Magazine
Standard Issue Ghost 19 Complete Slide – Black
Dealer Price Stub Ball End Mill
Polymaker PA6-CF Nylon Filament 1.75 Black
Angstadt Arms 9MM Bolt Carrier Group
PBS 19 Build Kit
AK47 7.62×39 Black Polymer Rifle Build Kit – *Head Spaced*
G26 G27 G33 Recoil Spring Assembly
AR-15 EPT CLASSIC LOWER PARTS KIT
KAK K-SPEC Enhanced AR15 Carrier- Downward Vents
Premium Classic LPK Black
AR Pistol Upper Only 9mm
MOE® Carbine Stock – Mil-Spec 





