Double Rib AR-15 Combo Kit

(1 customer review)


Availability: In stock

This kit contains the Double Rib AR-15 Reinforcement Kit plus all the parts needed to complete a 3D printed Double Rib AR-15 Super Lower. Please keep in mind that this kit will only work with the double rib lower, it will not work with the new SL-15.

You will need to print the lower itself, and provide the upper and other accessories.

Lower Parts:

  • Carbine Buffer Tube, Spring, and Mass.
  • Buffer Retainer Detent and Spring.
  • Safety Selector with Detent and Spring.
  • Trigger with Spring.
  • Hammer with Spring.
  • Disconnector with Spring.
  • Bolt Hold Open Lever with Roll Pin, Spring, and Plunger.
  • Magazine Catch with Spring and Button.
  • Front and Rear Take Down Pins with Springs and Detents.

Reinforcement Parts:

  • Four Bushings.
  • Bushing Installation Tool
  • Front Plates.
  • Two 10-32 Nuts.
  • Two 10-32 x 1.25″ Screws
  • Large Hose Clamp.
  • Hose Clamp Cover.
  • 1/4-20 Brass Insert.
  • 1/4-20 x 1.125″ Screw.

A small spare parts bag is added to each Combo Kit. This includes:

  • A Brass Bushing.
  • Take Down Pin Detent and Spring.
  • Safety Selector Detent and Spring.
  • Bolt Hold Open Pin, Spring, And Plunger.

And that is everything in the kit! For more info, check out the Super Lower download on the Downloads Page.

Weight 22 oz

1 review for Double Rib AR-15 Combo Kit

  1. Gray

    Shipped and arrived extremely quickly. So quickly, my lower isn’t finished printing. Seriously.
    The carbine-length buffer tube (7.25in) and spring (10.5in) were wrapped separately in heavy packing paper, and all the smaller pieces were organized and packed with care into heat-sealed bags (I immediately thought to myself, “now THIS is grown-up LEG0”). Quality is excellent across the board, and I will almost certainly be coming back for more very soon.
    FYI to the next builder: there WAS a TPU hose-clamp cover included (sealed) in my kit, though not featured in the product images! I bought an extra not being sure, and I honestly might recommend doing that anyways… in case it gets ripped off and lost whilst running around barefoot on the range, Hoffman-style. XD
    Thanks guys, and keep up the great work!!

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