Parts and accessories

Masterpiece Arms (MPA) Enhanced Bag Rider

Our newest Enhanced Bag Rider design was designed for F-Class Shooters, and provides a rock solid rear support when using an appropriate dual ear (or “V”) rear bag, such as the Protektor Series Rabbit Ear Design. It also provides an enhanced level of...

Masterpiece Arms (MPA) EVG Left hand insert

MPA EVG Left Handed InsertThis insert is designed to be used with a standard Right Handed EVG (Enhanced Vertical Grip) for shooters who want the Thumb Notch and Trigger Finger support on the left side of the grip surface.This 3D printed component will ...

Masterpiece Arms (MPA) Feed Lip Adjustment Tool

This tool comes in handy when adjustments are needed to the feed lips of your metal AR15, AR15 or Bolt Action Box Magazines to improve feeding.If your feed lips get tweaked, if you drop your magazine or simply have feeding issues due to feed angle of...

Masterpiece Arms (MPA) Low profile cheek riser kit

Kit A = Cheek Riser Plate Assy (plate, screws)Kit B = Cheek Riser Plate Assy for Chassis with Thumb Wheels (Competition, Matrix and ESR)Kit C = Cheek Riser Plate Assy for Chassis without Thumb Wheels (Hybrids and Ultra Lite)

Masterpiece Arms (MPA) Magazine block (Comp Chassis)

Mag Block InsertThis insert is designed to fit into the mag catch slot in Short Action MPA BA, BA Comp & Hybrid Chassis. This part was originally designed to work with Curtis Custom Vector Actions, for customers who wanted to run AICS magazines (on an AW...

Masterpiece Arms (MPA) Magwell plate BA Competition (complete kit)

This magwell plate system is for the BA Comp, ESR, Hybrid and Matrix short action chassis. These plates are designed to protect the magazine and provide the benefit of giving the shooter additional stability when shooting positional stages by digging...

Masterpiece Arms (MPA) Magwell plate Matrix Pro (complete kit)

This magwell plate system is for the BA Comp, ESR, Hybrid and Matrix short action chassis. These plates are designed to protect the magazine and provide the benefit of giving the shooter additional stability when shooting positional stages by digging...

MasterPiece Arms (MPA) Matrix Pro Rimfire Rifle

Red chassis, black barreled actionThe Matrix Pro Rimfire Rifle is a combination of our newest Competition Chassis, the Matrix Pro, along with an MPA/Curtis Action chambered for rimfire applications.Available in a multitude of barrel profiles and muzzle...

Masterpiece Arms (MPA) RAT Base

The RAT Base is used on our RAT System (Rapid Adjustment Technology) and attaches a variety of accessories to the 1.5″ Dovetail Cut on the BA Chassis System.This also will attach to the RAT Dovetail Adaptor Plate mounted to the MPA Spigot Mount.All Atlas...