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Sharps Bros Hellbreaker AR-15 Builders Kit - 15"

Parts Kit

In stock
Only 5 left

FFL Required Before Shipping.

Please have your dealer email a copy of their FFL to [email protected] or fax it to 253-218-2998, referencing your name and order number.

Special Price $399.99 Regular Price $600.00
Ribbons Free Good
Ribbons Free Good

Limited Time Offer: Buy a Sharps Bros Hellbreaker Lower Receiver and get a free Lower Parts Kit (Offer valid while supplies last - excluding dealers & distributors)


This Sharps Bros builders kit provides you a Sharps Bros Hellbreaker Lower Receiver paired with a Rainier Arms Upper Receiver and Urban Combat Rail. This Kit will get you started on your next build. 


Hellbreaker Lower Receiver:

  • Oversized integral trigger guards
  • Beveled magazine flares
  • A hard coat anodize finish per MIL-A-8625, the anodizing model for model for most military and aerospace products
  • Full compatibility with all mil-spec internal parts
  • Full compatibility with all other aftermarket mil-spec upper receivers
  • Full compatibility with PMags, Hexmag and other standard capacity magazines
  • Multi caliber mark
  • Weight- 8.9oz


Rainier Arms A4 Forged Upper Receiver - GEN2

  • Designed to fit our forged lower receivers with color, texture, & machining. These uppers are "T - marked" engraved and have extended M4 feed ramps.


Rainier Arms Urban Combat Rail - 15"

  • Rail- 6000 series extruded Aluminum Milspec Type 3 Class 2 Hard Black anodized
  • Barrel Nut- 7075 Aluminum  Type 3 Class 2 Hard Anodized
  • 17-4PH  Cored Stainless Steel Rail mounting attachment- Patent Pending
  • Anti rotate tabs time Rail to upper receiver
  • No Barrel nut shims required for installation
  • Does not contact or apply side loads to gas tube
  • Inner Diameter of handguard - 1.315"
  • MLOK Slots at the 3, 6 and 9 o'clock positions
  • Includes barrel nut wrench
  • Barrel Nut diameter- 1.378"
  • Compatible with most known low profile gas blocks
  • 11.9 oz. -Total weight including mounting hardware
  • Made & Assembled in USA


More Information
Product Type Parts Kit
Manufacturer Sharps Bros
Color Black
Rail Length 15"
Option AR-15

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