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Spike's Tactical Lower Parts Kit for .223/5.56

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The mil-spec lower parts kit is good enough. It does the job it's meant to do. The trigger, hammer, disconnector, detents, springs, and roll pins are perfectly suited to the job of making your lower (and the rest of your AR) work as intended. In keeping with the old adage "if it ain't broke, don't fix it," Spike's Tactical gives you their standard lower parts kit. All the parts and pieces conform to exact mil-spec standards, but with one caveat: more care has been put into its creation resulting in better fit and finish. This better-than-mil-spec lower parts kit ain't broke, so it wasn't fixed. It's just made better than your mil-spec lower parts kit.

Additional Features:

  • Spike's Pro Grip
  • Better than Mil-Spec Quality
  • Includes Trigger Group

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.