CMMG

ZEROED Lower Parts Kit, AR15

Finish your next AR15 lower receiver with the CMMG® ZEROED™ Mk4/AR15 lower parts kit. Every piece is made here in the USA and comes in convenient color-coded packets to make assembly a breeze. Check out our interactive install walkthrough video below or read the CMMG Resources LPK Install article for an in-depth breakdown. Don’t forget a Buttstock or Brace kit to complete your pistol or rifle lower. All parts meet or exceed mil-spec. All installation hardware included.

Kit Includes:

• ZEROED Extended Bolt Catch AR15
• Bolt Catch Plunger, Spring, & Roll Pin
• ZEROED Trigger Guard, Screw, & Roll PIn
• Trigger & Trigger Spring
• Disconnector & Disconnector Spring
• Hammer & Hammer Spring
• Trigger/Hammer Retaining Pins
• ZEROED 60°/90° Adjustable Ambi Safety, Detent, & Spring
• ZEROED Ambi Magazine Catch & Spring
• ZEROED Extended Magazine Release Button
• HD Pivot/Takedown Pins, Detents, & Springs
• ZEROED Pistol Grip, Grip Screw, & Washer
• Buffer Retainer & Spring

By ordering United Survival First Aid Kits (Medical Kits) or other products, you warrant that you have received the proper training and required authorization, if applicable, to use said medical products. United Survival assumes no liability for the misuse of any product or kit. You must know and understand your local/ state laws.

United Survival reserves the right to replace/switch any product with one of equal quality or value at any time at our discretion.

Descriptions on this website (unitedsurvivalstore.com) or any affiliate website are intended only to describe the products, and should not be construed as medical advice. Consult your healthcare provider for any and all medical advice.

WARNING: Cancer and Reproductive Harm

http://www.P65Warnings.ca.gov

We do not ship firearm parts to the following states. If you place an order for firearm parts to be shipped to these states, your order will be canceled and you will be charged a 15% restocking fee. We apologize for the inconvenience of these states' communism. 

• Colorado
• Delaware
• Massachusetts
• Washington D.C
• Hawaii
• Puerto Rico
• Alaska
• Connecticut 
• Illinois 
• Maryland
• New Jersey 
• New York
• Washington