PMACA Lightweight Chassis

$124.95 - $168.95
(41 reviews) Write a Review


  • 4 Oz lighter than the PMACA Standard Chassis
  • Fits Ruger® 10/22® standard and bull barrels
  • Adapts the Ruger® 10/22® rifle to AR15 components: Stock, Grip, and Picatinny rail
  • Innovative design minimizes bulk and weight for a clean look
  • High quality anodized aluminum precision machined from billet
  • Included items:
    • PMACA Light Weight Chassis
    • 1.75" Picatinny rail
    • Universal tang for grip
    • lock ring for the stock
    • Mounting hardware

View Customer Builds


  • Total weight of the kit: 12 Oz
  • Material : Anodized 6061-T6
  • Length: 11.75"
  • Width: 1.5"
  • Maximum free floating barrel diameter: 1.0"
  • Compatible 10/22® rifle models
    • Ruger®
    • Tactical Solutions
    • Kidd
    • Magnum Research
    • Select Fire LLC


The PMACA Light Weight Chassis  is a light weight version of the PMACA Standard Chassis.  It is machined from a single piece of 6061-T6 aluminum billet and then anodized.  We have spent extra time machining away extra weight without compromising the strength and durability of the chassis.  If desired the chassis can be painted with Cerakote in a number of colors.  The Cerakote ceramic coating provides additional protection and offers a selection of colors not available with anodized aluminum.  For custom requests, inform us of color choice in notes section.

The use of the chassis allows you to use AR15 stocks, grips, and a Picatinny rail for accessories such as a front grip, laser or flashlight.

Example Build:

  • Standard Ruger® 10/22® receiver
  • Factory Barrel
  • PMACA Lightweight Chassis
  • Magpul Collapsible Stock
  • Magpul Grip
  • Magpul vertical foregrip

Assembly instructions




Ruger® and 10/22®, and 10/22 Takedown® are registered trademarks of Sturm, Ruger and Co., Inc. . PMACA is not affiliated with Ruger® and is independently owned and operated.  All PMACA products are designed and manufactured in the USA.  


41 Reviews

  • 5
    Lightweight chassis

    Posted by Justin Timbrook on Dec 19th 2020

    Highly recommend.

  • 5
    Machining quality

    Posted by Dan on Dec 12th 2020

    Perfect finish. Perfect tolerances. Responsive customer service. 10/10

  • 5
    Excellent workmanship

    Posted by Edward Perez on Dec 9th 2020

    Just what I was looking for to make my sbr's and rifles

  • 4
    Love it

    Posted by Bryan McDonald on Dec 2nd 2020

    I like it a lot and would give it 5 stars for everything but finish. There are what looks like vice marks in the sides of it. Other then that I love it

  • 5
    Excellent workmanship

    Posted by Edward Perez on Dec 2nd 2020

    Good quality excellent perfect just what I was looking for plus love all the colors and their customer service is excellent

  • 5
    Pmaca lower

    Posted by Kev Ferraro on Nov 29th 2020

    Awesome fits perfectly and looks great

  • 5

    Posted by Brian Buehring on Nov 26th 2020

    This item did exactly what I wanted. Allowing me to put an AR pistol grip and stabilizer brace while staying lightweight.

  • 5

    Posted by Gary on Oct 27th 2020

    AWESOME!! Glad i finally pulled the trigger on this..

  • 5
    Good product

    Posted by Jerry Jacques on Oct 27th 2020

    Well made with good finish
    Hav not put it to a test yet but will when ammo is available again

  • 5
    Sub 4 pound steel challenge rifle

    Posted by Bryan on Sep 10th 2020

    When looking to put a lightweight 10/22 together for steel challenge, I knew I wouldn’t have any issues using the PMACA chassis to hold everything together. Using their lightweight chassis and other various components, I was able to get the rifle to only 3 pounds 12 ounces! Not shabby!