Highlighted Text are links to Items

Firearms Parts / Materials :

– AR-15 Pattern Barrels – x6
— KMTactical Barrels
— BCA Barrels
— These instructions will detail the build using 16 in. mid-length gas system barrels
— Other lengths of barrels can be used, the only variation from the instructions would be the
length, and hole placement of the Aluminum shaft which the barrel cluster mounts to
— Ideally shop around for the cheapest barrels that will work for the build, there’s no real reason
to use overly high quality components for this design
— Try to avoid using super heavy barrels, as the weight will add up fast with 6 barrels
— Its okay to have the gas port open to the air / not plugged

– AR-15 Bolt Hardware – [ Everything minus the CARRIER ] – x6 [x3 from this link as they are 2-packs]

Polymer Materials :

– 4 to 6 Spools of Primary Material depending on which parts and colors you choose
— The build uses a total of roughly 4100g – 5500g of filament
— PLA+ is generally recommended, though other higher-temperature materials would
be ideal for use on the components that are in contact with the barrel

Hardware :

Ball Bearings: [ Part Number ] – [ Dimensions ] – [ Quantity ]
– CSXD045 – 4.5 in. ID x 5.5 in. OD x 0.5 in. Thickness – x1
– R24-2RS – 1.5 in. ID x 2 5/8 in. OD x 9/16 in. Thickness – x2
– 6810-2RS – 50 mm ID x 65 mm OD x 7 mm Thickness – x1
– R16-2RS – 1 in. ID x 2 in. OD x 0.5 in. Thickness – x2
– R8-ZZ – 0.5 in. ID x 1.125 in. OD x 0.3125 in. Thickness – x6
– R188-ZZ – 0.25 in. ID x 0.5 in. OD x 0.1875 in. Thickness – x12
– 683-ZZ – 3 mm ID x 7mm OD x 3 mm Thickness – x6

Rods / Bar Stock: [ Size ] – [ Type ] – [ Length ]
– 3/32 in. diameter – Steel Rod – 1 ft. length
– 1/4 in. diameter – Steel Rod – 1 ft. length
– 1/2 in. diameter – Steel Rod – 1 ft. length
– 1 in. diameter – Aluminum Rod – 2 ft. length
– 1/4 in. Thickness – Steel Square Stock – 1 in. length
– Paperclip – x1

Screws / Nuts:
– 1/2-13 x 2 in. Screw
– 1/2-13 x 3 in. Screw
– 1/2-13 x 5.5 in. Screw
– 1/2-13 Nut – x3
– 1/4-20. x 4 in. Screw – x1
– 1/4-20 x 3.5 in. Screw – x2
– 1/4-20 Nut – x3
– M3-0.5 x 6 mm Screw – x3
– M3-0.5 x 10 mm Screw – x41
– M3-0.5 x 20 mm Screw – x1
– M3-0.5 x 25 mm Screw – x5
– M3-0.5 x 30 mm Screw – x11

Springs:
– Striker Springs – 12 mm O.D. – 1.5 mm Wire Thickness – 30 mm Length
— You must manually select the dimensions for the order

Other:
– M3 5 mm Diameter x 7 mm Length Threaded Insert – x74
– 1/2” x 28 Threaded Nut – x6
– 1.5 in. O.D. Tubing — I’ve come to find that tubing sizes are ridiculous, and it turns out 1 1/4 in. electrical conduit, has an Outer Dimeter of ~1.5 in. which makes no sense, but it does work well for the tripod legs