About this parts kit
CMMG Zeroed AR-15 Lower Parts Kit - .223/5.56 is a replacement part or parts kit.
Compare it with the part you are replacing or with the manufacturer's parts diagram to confirm it matches your model and generation before you order.
Manufacturer details
Kit Includes: ZEROED Extended Bolt Catch AR15Bolt 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. 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. Dont forget a Buttstock or Brace kit to complete your pistol or rifle lower. All parts meet or exceed mil-spec. All installation hardware included.
Specifications
- Brand: CMMG
- Fits: AR-15
- Compatibility: AR-15 Style Rifles
- Color: Black
- Manufacturer Part #: 55CA642
- UPC: 810097502307
Buying from WBT Guns
- Delivery: Ships to your door anywhere in the United States, or pick it up free at our La Mesa store.
- Payment: Pay in full or finance with Credova.
- Questions: Fitment or compatibility questions? Call (619) 667-9453 or email sales@wbtguns.com. FAQ
WBT Guns is family-owned in La Mesa, California, and has served shooters since 2012.
A note on accuracy. Specifications, fitment and images come from the manufacturer and can contain errors or change without notice. If a detail matters to your purchase, call us and we will confirm it before you order. Any compliance notes are general information, not legal advice; California and local laws change, and the rules that apply depend on the firearm the part goes on.
