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This is the MDT LSS Gen3 chassis base built specifically for left-hand Ruger American short action barreled actions, finished in black. It's the center body that everything else bolts onto, giving you a rigid, repeatable foundation without the need for a gunsmith. Drop in your barreled action, torque it down, and you've got a modern platform ready to grow with you. The base is machined from 6061 aluminum and wears a Cerakote finish, keeping it tough without turning your rifle into a boat anchor. On its own, the standalone base runs right around 22 ounces, so you're adding rigidity without a bunch of dead weight.
The big story with the Gen3 is how it comes apart and goes back together. You can swap the handguard and buttstock without pulling the action, which means your zero stays put no matter how many times you reconfigure. That's the feature people care about most, and it's what separates this generation from the older LSS chassis. The base accepts standard AR-style grips and converts your rifle to feed from AICS-pattern detachable magazines, with an ambidextrous mag release built right in.
Think of this base as a blank canvas. From here you add your choice of buttstock interface, buttstock, grip, and forend to match how you actually shoot. Setting up a lightweight backcountry rig, a truck gun, or a heavier barricade-ready build for the range? Same base, different parts. One thing worth noting: the Ruger American builds use Ruger-specific buttstock interface assemblies, so you'll want to pair this base with the matching Ruger interface rather than a standard LSS Gen3 interface.
For left-handed Ruger American owners who've been waiting for a real chassis option, this is a clean, well-machined answer that keeps the action you already trust while modernizing everything around it.
This particular base is machined for the left-hand Ruger American short action. It's action-specific, so it's cut to drop your left-hand Ruger American barreled action right in with no gunsmithing. If you run a right-hand Ruger American or a different action, you'll want the matching version instead.
No. The Gen3 base is the modular core of the system and is sold as the foundation you build on. You'll add your choice of buttstock interface, buttstock, grip, and forend separately to configure it for how you shoot. For Ruger American builds, plan on using the Ruger-specific buttstock interface, since the standard LSS Gen3 interfaces aren't compatible with this base.
Yes, and that's the headline feature of the Gen3. You can change out the handguard and buttstock without pulling the barreled action, so your zero stays exactly where you left it. That makes it easy to go from a light hunting setup to a heavier range build and back.
The LSS Gen3 feeds from standard AICS-pattern detachable magazines, and an ambidextrous mag release comes built into the base. If your rifle currently uses a blind or hinged magazine, dropping it into this chassis converts it over to AICS mags.
| UPC | 990482726492 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 115055BLK |
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