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Spear Arms

Spear Arms DIY Lower Build Kit

Product Code : SA-DIY-KIT

$64.99
OUT OF STOCK

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A Spear Arms Exclusive!! 

We are often asked, do you have a stock/buffer kit/lower parts kit? Can I get a discount to bundle it? Well we have set up this customizer for you to pick and choose exactly what you want!

In order to get the discounted prices, you will need to select the lower and lower parts kit. Stocks and Buffer Kits are optional if you would like to add them. All parts to complete your lower are available. See our listings for customized uppers to complete your build!

Lower Receiver Options

AR-15 Forged Lower - $64.99

  • 7075 Enhanced Forged 80% Lower
  • Gen 2 Pocket
  • Broached Magwell
  • Raw Tumbled
  • Threaded bolt catch
  • Threaded take down detent tunnel
  • Bolt catch pin and set screw included

Lower Parts Kit Options

AR15 Lower Parts Kit - Complete - $54.99

Our lower parts kits contain all high quality, 100% USA produced components, manufactured to our exacting standards.  Each kit is guaranteed to fit your mil-spec dimension lower receiver.  We don't use foreign made parts, polymer parts, or MIM parts.  These are quality kits at an excellent price.

  • Hammer
  • Trigger
  • Disconnect
  • Bolt catch
  • Bolt catch detent
  • Selector
  • Selector detent
  • Magazine catch assembly
  • Fire control group pins (2)
  • Takedown pin
  • Pivot 9in
  • Pivot pin detents (2)
  • Buffer retainer pin
  • Complete spring kit
  • Trigger guard assembly
  • A2 pistol grip assembly
  • 100% USA Made

Buffer Kit Options

AR-15 Carbine Buffer Kit - $39.99

  • Mil-Spec dimension 7075-T6 6 position buffer tube - hard coat anodized
  • Carbine buffer - 3.0 ounce
  • Castle nut - phosphate coated
  • Endplate - mil-spec phosphate coated
  • Buffer spring - standard music wire

AR-9 Carbine Buffer Kit - $44.99

  • Mil-Spec dimension 7075-T6 6 position buffer tube - hard coat anodized
  • 9 mm buffer - 5.5 ounce
  • Castle nut - phosphate coated
  • Endplate - mil-spec phosphate coated
  • Buffer spring - standard music wire

Stock/Brace Options

Magpul MOE Carbine - $59.99

  • Magpul MOE collapsable stock
  • 100% USA Made

M4 Style Stock - $34.99

  • Mil-spec M4 Style
  • Fits Mil-Spec diameter buffer tubes
  • 100% USA Made

Mako Skeleton Stock - $59.99

The GL-CORE is our newest addition to our line of buttstocks. The integrated cheek rest, ergonomic buttpad and an interchanging tube adapter, provide an unmatched fit on Mil-Spec and Commercial buffer tubes, with a high level of efficiency and comfort. 

  • Ergonomically shaped rubberized butt-pad for quick shouldering and easy maneuvering of the weapon
  • Interchangeable buffer tube adapters for a tight fit on Mil-Spec and Commercial buffer tubes
  • Integrated cheek rest in an overall compact and sleek design
  • No protruding parts, will not get caught on gear or webbing
  • Inversed positioning lever will not open accidently
  • Two integrated quick detach rear sling swivel connectors
  • Made of durable and light-weight fiberglass reinforced polymer composite

SB Tactical - SBA3 Brace - $119.95

Pistol Brace - Genuine SB Tactical SBA-3 Designed for all platforms capable of accepting a mil-spec carbine receiver extension, the SBA3™ is 5-position adjustable (on a standard 6 position buffer tube), dramatically enhances versatility, and features a minimalist design with an integral, ambidextrous QD sling socket.

  • SBA-3 pistol brace
  • 5 position adjustable
  • Ready for your custom AR15 or AR10 pistol build
  • 100% USA Made

Determined at checkout.