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Spike's Tactical Lower Receiver Parts Kit for .223/5.56 (Without Fire Control Group)

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This Spike's Tactical Lower Parts Kit does not come with a hammer, trigger, disconnector, or the two main springs for the fire control group. Instead, this kit can be paired with a drop-in trigger unit, providing an immediate upgrade (which is preassembled with those components and main springs) when you assemble your stripped lower receiver, or fabricated 80% lower.

This LPK includes all other components required to complete your lower, including like the parts listed with below, with all required pins, detents, and springs:

  • Magazine catch assembly
  • Pivot and takedown pins
  • Bolt catch assembly
  • Pistol grip
  • Safety lever
  • Buffer retainer
  • Trigger guard

Add'l Specs & Compatibility:

  • Mil-spec fitment
  • Upgraded textured pistol grip
  • Compatible with all 5.56/.223 lowers
  • Compatible with AR-15 80% lowers
  • Components work w/ drop-in triggers

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:

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. 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.