PMACA Lightweight Chassis

$149.50 - $204.95
(71 reviews) Write a Review
Bulk Pricing:
Buy in bulk and save


  • 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.  


71 Reviews Hide Reviews Show Reviews

  • 5
    Lightweight chassis for Ruger 10-22

    Posted by Regnad on Aug 3rd 2023

    It's lightweight, tough, and simply cool. I love it.

  • 4
    PMACA Lightweight Chassis

    Posted by Matthew johnson on Feb 9th 2023

    This is a great foundation for a lightweight build. Just wish a castle nut was included

  • 5
    Stellar Chassis

    Posted by Best purchase in a long time on Jan 19th 2023

    I was a little skeptical at first because I’d never heard of PMACA MFG but when the product arrived it was flawless and packed very carefully! I put together my build and took it to the range that next weekend. My Ruger 10/22 has never shot sweeter! I did upgrade the barrel but the chassis is sleek and light weight, exactly what I was hoping for, and it is rigid and durable too! Highly recommended!!!

  • 5
    The Best For your 10/22 needs

    Posted by Max on Dec 14th 2022

    This now makes my 5th chassis I've purchased. Every build I do I insist on using these lite wieght alternative to the "usual" THANK YOU PMACA for leading the way!

  • 4
    Lightweight stock

    Posted by Brian Sanchez on Dec 12th 2022

    Great fit. Nice and snug. Machining looks great also. Anodized finish is flawless. Only reason for the 4 stars is no option for charger model. With no buttock installed, there is an opening on the rear. Pistol version would be awesome

  • 5
    Pmac lite in blue

    Posted by Larry on Sep 15th 2022

    Product looks great no defects, fit and finish is good just waiting for a few parts to finish

  • 5
    Light, rigid, & accurate

    Posted by Ben on Sep 13th 2022

    I used the chassis to build my 22LR pistol. It fits compatible 10-22 receivers; in my case, a Brownell BRN-22 which is not a take down version. I matched it with a Whistling Pig 8” barrel and standard AR15 pistol buffer with a brace. It comes in around 3.5lb, well below the 64oz requirement. I’ve only ran about 100 rounds through it but I can easily clang a 6” plate at 75yds without a problem. The chassis is light, holds rigidity, and Unblemished. It needed a little fitting for the bolt to be inserted…a 5 second job with a dremel and small sander stick. The receiver is a tight fit for the BRN-22 but it holds it tight. The unit comes with an action screw so you wont have to buy your own. You’ll have to supply the screw for the AR15 pistol grip. Overall, I highly recommend.

  • 5
    love them been building 4 so far light weight way to go

    Posted by jarmo koski on Aug 11th 2022

    steel challenge needs 10 inch extension i made my self from light plastic carppon fiber

  • 5
    Great quality

    Posted by Jeff on Jul 23rd 2022

    I bought this for a steel challenge rifle build. Was here in no time then. Some very minor fitting needed. Looks great and so light. Thanks

  • 5
    Lightweight chassis

    Posted by Brendo on May 26th 2022

    Worked great with my Faxon22 receiver. Easy, lightweight, looks great. I’ll probably be buying a couple more at this price point just for different colors!