New: MasterPiece Arms Rapid Adjustment Technology

by
posted on October 23, 2017
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **

MasterPiece Arms (MPA) has introduced a new product line, the MPA Rapid Adjustment Technology (RAT) System. This system enables MPA Chassis users to quickly adjust bipod, tripod and barricade stops on the fly. The RAT system is composed of the Base, Harris Adaptor, Dovetail Adaptor Plate, Picatinny Rail Adaptor and Magnetospeed System.

Coming in at a svelte one pound, the lightweight RAT Base (MSRP $70) can attach a variety of accessories to the 1.5″ Dovetail Cut on the MPA BA Chassis System. A pocket is machined into the bottom that includes holes designed to accept a series of accessories that will attach to the Base, allowing the shooter to utilize the RAT System. It attaches to the RAT Dovetail Adaptor Plate mounted to the MPA Spigot Mount. Additionally, an Atlas Bipod can also mount directly to the RAT Base.

The RAT Dovetail Adaptor Plate (MSRP $30) attaches to the Spigot Mount on the MPA BA Chassis System and allows the shooter to run the RAT System and all the accessories on both the chassis body and the Spigot Mount. It’s also needed to run the Magnetospeed Adaptor on the MPA BA Chassis. Installation consists of simply removing the existing Picatinny rail from the Spigot Mount, and attaching the RAT Dovetail Adaptor Plate.

The RAT Harris Adaptor (MSRP $90) provides an attachment method for the Harris Bipod to the 1.5″ Dovetail Cut on the MPA BA Chassis System, and also the RAT Dovetail Plate (Spigot Mount). It is designed to replace the sling stud attachment plate on a Harris Bipod.

The RAT Picatinny Rail Adaptor (MSRP $90) is designed to provide an attachment method for items that interface with a Picatinny rail. This connects to the 1.5” Dovetail Cut on the MPA BA Chassis System, as well as the RAT Dovetail Plate (Spigot Mount).

The RAT Magnetospeed Adaptor (MSRP $90) is designed to provide an attachment method of a Magnetospeed V2 or V3 to the RAT Dovetail Adaptor Plate (Spigot Mount) on the MPA BA Chassis. Shooters can attach the Magnetospeed to the rifle without contacting the barrel. This eliminates any point of impact shift concerns when the shooter is gathering data on velocity. The system includes the RAT Base, Magnetospeed Adaptor Block, and attachment rod and thumb wheel. A Spigot Mount and RAT Dovetail Adaptor Plate are required to attach to the chassis.

Latest

Trashshield Breek 2
Trashshield Breek 2

New: Breek Arms Trash Shield

Breek Arms’ new Trash Shield is a compact blast-forwarding device that redirects muzzle concussion downrange on any HUB-compatible suppressor mount.

First Look: Real Avid Tools For Short Barrel Rifles

Real Avid's 2026 lineup adds a portable .223/5.56 cleaning kit alongside updated tools designed for AR-style short barrel rifle maintenance.

Kruse Makes Texas History With Record 10th Texas Sporting Clays Title

Cory Kruse claimed a record 10th Texas resident sporting clays title as Team Federal claimed top honors at the 2026 Texas State Championship.

New: FN PUREVIEW Red-Dot Optic

FN America enters the optics market with PUREVIEW, a holographic micro red dot that projects onto flat glass for parallax-free aiming.

New: Springfield Armory 1911 Garrison Target in .45 ACP, 9 mm

Springfield Armory announces launch of 1911 Garrison Target chambered in .45 ACP and 9 mm Luger.

West Point Wins 2026 SIG Sauer Relentless Warrior Championship

The U.S. Military Academy at West Point topped the leaderboard at the 2026 SIG Relentless Warrior Championship.

Interests



Get the best of Shooting Sports USA delivered to your inbox.