MasterPiece Arms (MPA) Unveils the MPA Matrix Chassis at the 2019 Precision Rifle Expo (PRE)

Intended as the most revolutionary chassis design ever produced, the MPA Matrix Chassis provides the primary interface between the shooter and the rifle with over 100 different variations.

Photograph courtesy of Team POI.

Comer, Ga. (October 2019)MasterPiece Arms (MPA), manufacturers of the MPA BA Rifles and Chassis Systems, is constantly working to update and innovate its selection of products for the precision shooting market and is proud to introduce its most revolutionary chassis configuration yet: the MPA Matrix Chassis. Built upon MPA’s highly successful BA Chassis System, the MPA Matrix Chassis was debuted on Saturday, Sept. 28, 2019 at the 2019 Precision Rifle Expo. With a multitude of configurations in grips, thumb rests and trigger finger supports, the primary interface between the shooter and the rifle (the grip) has over 100 different variations.

MPA has developed a hand measurement chart to help identify which grip configuration may work best for each individual shooter. Additionally, the location of the shooter’s hand, closer to the bore of the rifle, provides even more variation in how the shooter can set up the rifle. The MPA Matrix Chassis features five different grip options (three swept and two vertical), three different thumb rest designs and four different trigger finger supports. It also has M-LOK slots along the side of the chassis forend and barricade stop holes along the bottom of the forend. The forend of the chassis is the same length as the MPA ESR Chassis, making it two inches longer than the standard BA or BA Competition Chassis.

“One of the things that we have seen in precision rifle shooting over the past couple of years is how many different methods a shooter used to engage a stock or chassis. Due to variations in hand size, finger thickness and length, as well as shooter preference on how they want to engage the chassis or stock, we’ve seen a lot of inconsistencies amongst the shooters in how they engage the rifle and where they position the pad of the trigger finger with the shoe of the trigger. This inspired us to create a system that would provide a more custom fit procedure for our customers by creating a chassis with more customized configurations,” commented Phil Cashin, President of MasterPiece Arms.

The MPA Matrix Chassis is machined on MPA’s CNC Horizontal Machining Centers to exacting tolerances from 6061 aluminum. The MPA produced buttstock comes with an adjustable cheek riser and length of pull, recoil pad with height and cant adjustment, adjustable cheek riser and adjustable monopod (monopod replaced with bag rider on Competition Model). The v-bedding system provides additional clearance for glass bedding action and straight section of the barrel if desired.

MPA Matrix Chassis Specifications:

  • Action: Remington Short Action (and clones)
  • Weight: 6.2 lbs.
  • Dimensions: 36 x 8 x 8 in.
  • Length of Pull: 13.5 – 14.75 in. (can be shortened or lengthened by special request)
  • Left Hand/Right Hand: Both
  • Night Vision Bridge: Standard Bridge/Standard Rail, Enhanced Bridge/Enhanced Bridge Length Rail
  • MSRP: $1,200.00 – $1,400.00

The MPA Matrix Chassis is available in eight standard Cerakote® colors, including Graphite Black, Flat Dark Earth, Burnt Bronze, Tungsten, Gunmetal, Sniper Green, NRA Blue, and USMC Red. Custom Cerakote colors are an additional $135 for a solid color from any of Cerakote’s H Series. Camo patterns are also available for a $450 upcharge.

MPA makes every effort to get the product to the customer as quickly as possible. These are hand-built precision instruments and not production components. To see MPA’s latest delivery and lead times for all Bolt Action Rifles and Chassis, visit

For more information on MasterPiece Arms and their product line of rifles, chassis systems, and accessories, visit

Watch the new video on this modular, flexible, revolutionary rifle chassis design above.

About MasterPiece Arms:

MasterPiece Arms main offices, located in Comer, Georgia, combines quality engineering and state-of-the-art manufacturing to design and produce firearms, such as highly successful BA Rifles and Chassis Systems. Masterpiece Arms uses high accuracy CNC machining, turning, barrel making, laser cutting and bending in its manufacturing process controlled by their ISO9002/TS16949 Registered Quality System.

MPA engineers test and retest our weapons to provide customers with one of the most enjoyable guns available. With versatile uses, such as personal and home protection, long range shooting, hunting and tactical interests, MPA products are one of a kind and backed by a lifetime warranty for original owners. Learn more about MasterPiece Arms products at or call 866.803.0000.

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