Zermatt Arms RimX RF3 MasterPiece Arms MPA RAT .22LR Precision Bolt Rifle
SOLD FOR: $3,025.00
LSB#: WY250421ML013
Make: Zermatt Arms / Masterpiece Arms
Model: RimX RF3 / MPA RAT (Rapid Adjustment Technology) Chassis
Serial Number: R01322
Year of Manufacture: Modern
Caliber: .22 Long Rifle
Action Type: Bolt Action, Magazine-Fed
Markings: The left side of the receiver is marked “RIMX / ZAI – BENNET NEBRASKA”. The chassis is marked with the MPA logo and “Masterpiece Arms” branding. The barrel shank is marked “PROOF .22 LR”, and the barrel tuner is marked “EC Tuner”.
Barrel Length: 21” Carbon Fiber-Wrapped PROOF Research Barrel. 22 ½” with EC Tuner.
Sights / Optics: No sights are present. The top of the receiver and handguard are fitted with picatinny rail segments for optics and accessories.
Stock Configuration & Condition: The rifle is mounted in a Masterpiece Arms RAT chassis system finished in Bronze with integral thumb rest, full-length M-LOK slots, barricade stop, and an enhanced grip module. The stock features adjustments for cheek riser and buttpad height and length of pull, along with a rear monopod base and bag rider. The chassis is in Excellent condition with little sign of use. TriggerTech Diamond Trigger installed.
Magazine Quantity & Condition: 2x 10rd RimX Magazines in Excellent condition.
Type of Finish: Cerakote and Anodized Finish on Chassis, Matte Black Receiver, Carbon Fiber-Wrapped Barrel
Finish Originality: Original
Bore Condition: The bore is bright and sharp. In this writer’s opinion, the bore rates 10/10.
Overall Condition: This rifle retains about 98% of its metal finish. This rifle shows no notable wear or signs of heavy use. There are some magazine insert wear around the magwell. The controls are crisp and clean, and the EC Tuner is unmarred. The rifle appears to be in Excellent condition mechanically and cosmetically.
Mechanics: The action cycles smoothly and locks up properly. The adjustable trigger breaks cleanly, and the magazine system is proprietary to the RimX platform, compatible with .22LR match ammunition. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance requirements.
Box, Paperwork, & Accessories: Total of two magazines.
Our Assessment: This is a competition-ready .22LR precision rifle built on the highly-regarded Zermatt Arms RimX action, outfitted with a carbon-wrapped PROOF Research barrel and finished in a fully adjustable Masterpiece Arms RAT chassis. The RimX is known for its exacting tolerances and Remington 700 footprint, making it compatible with a wide range of triggers and chassis systems.
Equipped with an EC Tuner on the PROOF barrel, this setup allows for fine-tuned harmonics at the muzzle for maximum accuracy potential with various .22LR match loads. Whether you’re a PRS rimfire competitor or a precision enthusiast chasing ragged-hole groups at 100 yards, this rifle delivers the performance and adjustability serious shooters demand.
This rifle combines high-end components, professional-level build quality, and the tunability to dominate in NRL22 or PRS rimfire divisions. With its premium parts and meticulous construction, this is a true turn-key setup for anyone chasing perfection on steel or paper. Please see our photos and good luck on your bid! – L.S.
