Description
The MDT TIMBR Core Kit takes the warmth and feel of a traditional wood stock and marries it to the guts of a precision chassis. Instead of solid walnut, the GMC version uses a laminate birch stock finished in Green Mountain Camo, which layers wood under pressure to fight the warping and point-of-impact shifts that can plague solid wood in changing weather. Wrapped inside that stock is MDT's aluminum micro-chassis with their proven V-block bedding system, so your Ruger American short action locks in the same way every time without a bedding job or a trip to the gunsmith.
What Sets the TIMBR Core Kit Apart
The big draw here is the "Kit" part. This package pairs the TIMBR Core stock with MDT's CORE bottom metal, which means you can run AICS-pattern magazines instead of the factory setup. That gives you a huge range of options in polymer or metal, and it's a genuine upgrade over the standard flush-fit rotary mag on most American rifles. It's worth noting this stock is built specifically for the Ruger American short action right-hand pattern, so it's a purpose-fit part rather than a universal drop-in.
Ergonomics Built From a Competition Background
MDT didn't just carve a pretty stock. The comb is raised to line up cleanly behind a scope, the belly is flattened to ride a rear bag, and the grip sits at a comfortable 68-degree angle. You get adjustable length of pull through included spacers, running roughly 13.6 to 14.6 inches, so you can dial the fit to you or to a heavy jacket in deer season. Integrated QD sling studs front and rear let you hang a bipod and a carry strap at the same time, and the oversized forend channel clears heavier barrels up to a Sendero profile.
Getting the TIMBR Core Kit on Your Rifle
Installation is about as simple as it gets. Lay the barreled action into the stock, install the magazine latch, and torque the action screws. On the American, the rear action screw sits under the mag latch, so it takes a couple extra minutes compared to a Remington pattern, but you won't need anything beyond an Allen key. The laminate construction and wood's natural recoil-dampening also make this a genuinely pleasant rifle to shoot all day, whether you're punching paper or working awkward field positions.
Key Specifications
- Manufacturer: MDT
- Manufacturer Part Number: 116033GMC
- UPC: 990482731755
- Rifle Compatibility: Ruger American Short Action, Right Hand
- Finish: Green Mountain Camo (Laminate Birch)
- Core Construction: Aluminum micro-chassis with V-block bedding
- Magazine Compatibility: AICS-pattern (via included CORE bottom metal)
- Adjustable Length of Pull: Approx. 13.6" to 14.6" with included spacers
- Grip Angle: 68 degrees
- Sling Attachment: Integrated QD sling studs, front and rear
- Barrel Channel: Oversized, accepts up to Sendero profile
- Bottom Metal Inlet: Badger M5 pattern
What’s Included
- MDT TIMBR Core stock (Green Mountain Camo laminate)
- MDT CORE bottom metal
- Length of pull spacers
- Action screws and installation hardware
Frequently Asked Questions
Does the MDT TIMBR Core Kit require bedding or a gunsmith to install?
No. The stock is built around an aluminum micro-chassis with V-block bedding, so your action locks in without any traditional bedding or custom work. You just lay the barreled action in, install the magazine latch, and torque the action screws with an Allen key. On the Ruger American, the rear action screw sits under the mag latch, so plan for a couple extra minutes there.
What magazines will the TIMBR Core Kit accept?
Because this is the Kit version, it includes MDT's CORE bottom metal, which is built for AICS-pattern magazines. That opens up a wide selection of aftermarket mags in both polymer and metal. It's a solid step up in flexibility over the factory flush-fit rotary magazine.
What is the difference between the Walnut TIMBR Core and this Green Mountain Camo version?
The Walnut version uses solid walnut, while the GMC (Green Mountain Camo) version is built from laminate birch. Laminate is layered under pressure, which makes it more resistant to warping and point-of-impact shifts as temperature and humidity change. Both use the same aluminum micro-chassis and V-block system inside.
Will this fit any Ruger American, and can I adjust the length of pull?
This kit is cut specifically for the Ruger American short action in a right-hand configuration, so it's purpose-fit rather than universal. Length of pull is adjustable through the included spacers, running roughly 13.6 to 14.6 inches. That lets you tune the fit to you or account for a bulky jacket in cold weather.





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