Luth Ar Modular Chassis Assembly

The Luth-AR Modular Chassis Assembly (MCA-22) is a precision rifle stock system purpose-built for shooters who want to transform their Ruger 10/22 into a tack-driving platform for competition and recreational hunting. This chassis replaces your factory stock with a fully adjustable, ergonomic system that turns a budget-friendly rimfire into something that feels and shoots like a purpose-built competition rifle. If you run a standard or bull-barrel 10/22 receiver and want real precision without the price tag of a centerfire platform, this is your answer.

Built from glass-filled nylon and aluminum with steel components, the MCA-22 delivers rugged durability at a weight of just 2.09 lbs—light enough that it won't bog down your 10/22 during a full day at the range or in the field. The chassis is 100% ambidextrous, so lefties and righties get the same level of control and comfort. Everything adjusts to fit your body: length of pull runs from 11.25 to 15.75 inches in .75-inch increments, the cheek piece clicks up and down 2 inches (+1 to −1 from bore center), and the aggressive texturing on the grip and front strap keeps your hands locked in place whether you're shooting prone, from a rest, or offhand.

The modular design keeps things practical. The foregrip accepts standard M-LOK accessories, includes a pre-drilled sling stud locator (10-32 tap required), and ships with a removable taper barrel insert to accommodate bull barrels without fuss. Up top, the goose-neck pistol grip sports an ambidextrous palm swell for natural hand position, and the stock accepts two locations for GrovTec threaded quick-detach cup inserts. Available in Black or Flat Dark Earth, it collapses to 27 inches and extends to 30.75 inches—compact enough for hunting brush country, long enough for a comfortable shooting position. This is a chassis-only system; you'll supply the receiver, trigger group, and barrel.

Whether you're chasing sub-MOA groups at a rimfire precision match or setting up a lightweight hunting rifle that punches above its weight, the Luth-AR MCA-22 gives you the adjustability and control of a custom rifle at a fraction of the cost.

Key Features

• 100% ambidextrous design—goose-neck pistol grip with palm swell works for any shooter
• Adjustable length of pull: 11.25 to 15.75 inches in .75-inch increments
• Click-adjustable cheek piece with 2 inches total rise adjustment
• Aggressive texturing on grip panels and front strap for secure purchase
• M-LOK compatible foregrip with 5 slots on bottom and 1 slot per side
• Removable taper barrel insert for standard and bull-barrel compatibility
• Two GrovTec QD cup insert locations for quick-detach sling attachment
• Lightweight glass-filled nylon and aluminum construction at 2.09 lbs
• Pre-drilled sling stud locator hole on foregrip (requires 10-32 tap)
• Available in Black and Flat Dark Earth finishes

Specifications

Frequently Asked Questions

Will the Luth-AR MCA-22 fit my Ruger 10/22?

The MCA-22 is designed for Ruger 10/22 standard and bull-barrel receivers, but it is NOT compatible with takedown models or receivers with a rear tang. It also does not fit bolt-action .22s. If you have a standard fixed-receiver 10/22, you're good to go.

Do I need to buy anything else to use this chassis?

Yes. The MCA-22 is a chassis-only system. You'll need to provide the Ruger 10/22 receiver, trigger group, and barrel. Once you have those components, assembly is straightforward.

Can I adjust the length of pull and cheek rest?

Absolutely. Length of pull adjusts from 11.25 to 15.75 inches in .75-inch increments to fit different body sizes. The cheek piece is click-adjustable and rises up to 2 inches total (+1 to −1 from bore center), so you can dial in your sight picture quickly and comfortably.

What does it weigh, and will it affect my 10/22's balance?

The chassis weighs 2.09 lbs, making it a lightweight upgrade that won't bog down your rifle. The design is intended to improve handling and precision without adding unnecessary heft.