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  King Machine's AR Lower Receivers
King Machine and Tool Co. is a family owned company who has been manufacturing precision machine parts for over 59 years. The company is made up of numerous mechanically inclined, gun owners and enthusiasts who have acted upon their desires to improve upon the quality and workmanship of the parts that they use on their weaponry. King Machine acquired a Class 7 FFL in 2013 to manufacture the desired parts.
King Machine provides consumers with AR Lower Receivers that are:
  • Manufactured from 7075-T6 Aircraft grade aluminum alloy which has a higher tensile strength than steel
  • Manufactured from start to finish on a 5-Axis CNC machine
  • Stronger than lowers that are forged
  • Manufactured with a thicker wall around the Mag Well which is offered with either a straight or finger groove design
  • Machined with smooth, precision contours that are ergonomically beneficial
  • Machined with an integrated trigger guard for a more solid and stable frame
  • Mil-Spec Hard Anodized Finish to maximize hardness and minimize cosmetic flaws from use
  • Incorporating a spring loaded tension set screw to ensure a tight fit regardless of the upper receiver that is matched with
  • **Lifetime Warranty on all lowers**: Exclusions may apply, inquire for more details
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