Description
Rimfire precision shooting has come a long way, and the MDT ACC Premier Gen2 for the Ruger American Rimfire brings the same competition DNA that made this chassis a staple at centerfire matches to the little .22 world. It borrows the best ideas from MDT's flagship ACC Elite, including a stiffer, thicker forend and a taller integrated barricade stop, then trims the forend down to a compact 15 inches so it plays nicely with shorter rimfire barrels. The result is a stable, adjustable foundation that helps you find targets faster and stay planted on props and bags.
What the ACC Premier Gen2 Brings to a Ruger American Rimfire
The heart of this chassis is its weight management system. You can add interior forend weights (up to four), M-LOK external weights, and buttstock weight to fine-tune balance and recoil feel without ever pulling your barreled action out. The full-length integrated ARCA rail runs the entire forend for quick bipod and tripod mounting, and there are 8 M-LOK slots per side for bags, weights, and accessories. Machined from hard-anodized 6061 aluminum and finished in Cerakote black, it's built to take a beating match after match.
Dialing In Your Fit With the Gen2 Chassis
Fit is where this system shines. The included MDT SRS-X Lite buttstock gives you adjustable length of pull via 1/4-inch spacers plus an adjustable cheek riser, and the MDT Vertical Grip Premier lets you position your hand naturally behind the rifle. There's a wide integrated thumb shelf, QD sling cups, an ambidextrous mag latch, and even a hole in the trigger guard so you can reach trigger adjustments without tearing things down. It accepts AICS-pattern magazines and standard AR-15 grips if you want to swap.
Getting It Set Up
One of the best parts is how painless the install is. Drop your Ruger American Rimfire action into the V-block bedding and tighten two screws, and you're basically done. The tapered V-block keeps consistent contact between the action and the chassis, which is what keeps your groups tight shot after shot. No gunsmithing, no fuss, just a straightforward upgrade that turns a factory rimfire into a legitimate trainer or match gun.
Key Specifications
- Manufacturer: MDT
- Manufacturer Part Number: 114882BLK
- UPC: 990482727109
- Model: ACC Premier Gen2
- Fitment: Ruger American Rimfire, Right-Hand
- Finish: Cerakote Black
- Material: Hard-anodized 6061 aluminum
- Forend Length: 15 inches
- Forend Interface: Full-length integrated ARCA rail with 8 M-LOK slots per side
- Barricade Stop: Integrated, tall
- Included Buttstock: MDT SRS-X Lite (adjustable LOP and cheek riser)
- Included Grip: MDT Vertical Grip Premier (AR-15 grip compatible)
- Length of Pull: Adjustable via 1/4-inch spacers
- Magazine Compatibility: AICS pattern
- Bedding: Tapered V-block
- Weight: Approx. 4.8 lbs, chassis and buttstock without added weights
What’s Included
- MDT ACC Premier Gen2 chassis base (Ruger American Rimfire RH, Cerakote Black)
- MDT SRS-X Lite adjustable buttstock
- MDT Vertical Grip Premier
- Mounting hardware
Frequently Asked Questions
Will the ACC Premier Gen2 fit any Ruger American Rimfire?
This model is cut specifically for the right-hand Ruger American Rimfire footprint. Your barreled action drops into the V-block bedding and locks down with two action screws, so no gunsmithing is needed. Double-check your rifle is the standard right-hand American Rimfire before ordering.
Does the MDT ACC Premier Gen2 chassis come with a buttstock and grip?
Yes, this is a complete chassis system. It ships with the MDT SRS-X Lite adjustable buttstock and the MDT Vertical Grip Premier, both included. You'll just need to supply your barreled action and AICS-pattern magazines to get up and running.
Can I add weight to balance out my rimfire build?
That's one of the standout features. The Gen2 accepts up to four interior forend weights, M-LOK external weights, and buttstock weight, letting you tune balance and recoil feel. Best part is you can adjust it all without removing your barreled action from the chassis.
What magazines and grips work with this chassis?
The chassis is built around AICS-pattern magazines for feeding. It ships with the MDT Vertical Grip Premier, but if you prefer a different grip it also accepts standard AR-15 style grips. That gives you plenty of room to set it up the way you like.




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