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Spike's Tactical - AR-15 Lower Parts Kit Without Trigger

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Spike's Tactical's AR-15 Lower Parts Kits are made out of high-quality parts with precision machinework and expert quality control to ensure reliable functionality as soon as they're installed. This LPK does not include a fire control group, and is designed for a drop-in trigger unit.

What's Included:

  • Upgraded pistol grip
  • Upgraded trigger, hammer pins
  • Front takedown pin w/ detent
  • Rear pivot pin w/ detent
  • Billet trigger guard
  • Ambidextruous safety
  • Magazine catch assembly
  • Bolt catch assembly
  • Buffer retainer w/ spring

Installation Instructions

Installing the lower parts kit in your receiver is easy! Just follow our detailed, step-by-step instructions, complete with tools, pictures, and video.

How to Install The AR-15 Lower Parts Kit

Finishing your AR-15 Lower

In addition to this lower parts kit (and a drop-in trigger), you'll a Buffer Tube Kit. This includes the components necessary for the lower receiver to work with your chosen upper receiver assembly.

Buy a Buffer Tube Kit here.

To complete your custom AR-15 build quickly and easily, check out our barreled upper assemblies. They include high-quality barrels, handguards, mil-spec bolt carrier groups, and charging handles.

Buy a Barreled Upper Assembly here.




WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov

Shipping Restrictions

Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily.

80-Lower.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.

Spike's Tactical

We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.