We Ship Fast!

Order by 1PM CST for Same Day Shipping (Mon-Fri)

CMMG Lower Receiver Parts Kit for AR-15  - 55CA6C5

CMMG Lower Receiver Parts Kit for AR-15 – 55CA6C5

In Stock

90 Day No-Hassle Returns We Pay Return Shipping

We have a 90-day no-hassle return policy. We pay return shipping.

If you need to request a return, contact us at support@at3tactical.com and we will send you a return label

After 90 days, defective items will still be covered under the manufacturer’s warranty, where applicable.

Please refer to the product listing for warranty details. If you have specific warranty questions, contact us at support@at3tactical.com. We may direct you to pursue your warranty claim directly with the manufacturer.

Your satisfaction is our #1 priority

If you’re dissatisfied with your purchase, in any way, please contact us at support@at3tactical.com – we will do our best to make it right.

Fast & Free Shipping On orders over $50

You will receive fast, free shipping for all orders over $50

Shipping cost is $7.99 for orders under $50. We ship with UPS or USPS, depending on the item.

Most orders received by 1pm CST ship the same day

You will receive an email with tracking information at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses. Orders placed on weekends, holidays, or after 1pm will ship the following business day.

Color coded bags and an easy-to-use parts list will save you time and frustration with this excellent Lower Parts Kit (LPK) for AR-15.

It includes a pistol grip, fire controls and pins necessary to complete stripped lower – everything but the stock and the lower receiver. All parts are Mil-spec and well packaged.

The kit includes:

  • Bolt catch
  • Bolt catch plunger
  • Bolt catch roll pin
  • Bolt catch spring
  • Buffer retainer
  • Buffer retainer spring
  • Disconnector
  • Disconnector spring
  • Hammer
  • Hammer pin
  • Hammer spring
  • Magazine catch
  • Magazine catch button
  • Magazine catch spring
  • Pistol grip
  • Pistol grip lock washer
  • Pistol grip screw
  • Pivot pin
  • Pivot pin detent
  • Pivot pin detent spring
  • Selector
  • Selector detent
  • Selector detent spring
  • Takedown pin
  • Takedown pin detent
  • Takedown pin detent spring
  • Trigger
  • Trigger guard
  • Trigger guard roll pin
  • Trigger pin
  • Trigger spring

Have Questions About this Product?

You have not viewed any product yet!

Customer Reviews

Based on 7 reviews
excellent service

I received exactly what I ordered and delivered on time.


The shipping is lightning fastan.........

Everything I needed.

Awesome lowers parts kit. Made it so easy to do a home build when everything was separated and put into color codes bags. Will definitely buy again.


all parts present and went together easily. Good quality

Little confused, but overall Happy

I made my first purchase at www.at3tactical.com, and I can say that I am for the most part very satisfied . I purchased a CMMG Lower parts kit and, a two-piece drop-in GM-QR1 AR-15/M4 hand guard . Shipping was very fast and I got the CMMG LPK for a great price. But the GM hand guard (although very similar to the one I ordered), was not the one I seen before or the one shown on your website, I looked at other websites including GM official website to see if perhaps I was getting an older or new version of the hand guard, but all of them show the same item you have on your website. The item did not come with GM labels and was assembled unlike the ones I seen that come with the two pieces unassambled and the Allen Wrench to tight the 4 screws.
I will like to thank you for taking the time to ask customers for feedback and reviews on recent purchases!

Eduardo Reyes