CM4 5.56 Forged Lower Receiver

Typically Processes/Ships within 5 days from receiving FFL Copy
(12 reviews) Write a Review

Out of stock

Out of Stock

**FFL Required Before Shipping. Please have your dealer email their license to and have them reference your name/order number. 

No we do NOT accept fax as we live in the modern world and we also do NOT accept carrier pigeon. **

Centurion Arms LLC, C4 5.56 Forged Lower Receiver 7075-T6 Aircraft Grade Aluminum

Receivers Machined from Aluminum Forgings 7075-T6


M16/Auto Pocket


Receivers Hardcoat Anodized per MIL-A-8625F, Type III, Class 2


Weight: .4lbs







  • 5

    Posted by Don Dobbs on Dec 3rd 2020

    Great lower

  • 5
    Outstanding fit/finish

    Posted by Jordan on Nov 25th 2020

    I was looking for a forged, mil spec lower and was told to check our Centurion Arms, and I’m glad I did. Fit between upper/lower was tight, anodizing was perfect, and all other dimensions were within spec. What more could you ask for?

  • 5
    Great lower

    Posted by John Milletics on Nov 20th 2020

    Nice stripped lower. Finish is perfect. Mated it with a Solgw upper and the fit was right whobble. Recommend to all.

  • 5

    Posted by perry clontz on Nov 18th 2020

    Top notch receiver, best lower I have ever bought. Fast shipment.

  • 5

    Posted by shookme on Sep 14th 2020

    Very nice tight, positive fit on multiple uppers.

  • 5
    CM4 5.56 Forged Lower

    Posted by Ray Duroy on Sep 11th 2020

    Great lower, fit finish. Mine was a complete lower everything perfect, enhanced mil spec trigger is great. You cannot go wrong with the product.

  • 5
    Excellent Magwell

    Posted by Dean on Nov 10th 2019

    One thing I look at in a mil-spec forged lower is a nice flared magwell. I was very happy with this one. Some proclaimed high end companies fail to incorporate this detail. Looking at you Colt!

  • 5
    CM4 5.56 Lower Receiver

    Posted by Shaun on Oct 30th 2019

    Fit and finish, and durability of lower is superb. Used to build complete Centurion Rifle. Easily the best rifle in my collection. Customer service and response time is also outstanding. Own numerous CA products and always impressed with quality. Highly recommended.