MasterPiece Arms
Manufacturer of precision bolt action chassis and rifles, MAC-style pistols, accessories and more.
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MPA Brass Catcher
$219.99 Add to cartTired of losing brass at your PRS, NRL or Club/Regional Series event? The MPA Brass Catcher is designed for you….
Attaches via the scope base pic rail on your bolt gun. The wire frame that holds the pouch is adjustable “front to back”and “up and down.”
Subtle adjustments can also be made to the wire frame to get the exact fit you want.
The hinge will position the brass catcher closed (up against the ejection port) or open (90 degrees to the ejection port) for easy removal of the brass after your stage.
Holds 15+ pieces of full size short action caliber brass (308, 6.5 & 6mm Creedmoor, etc) or more of smaller brass types such as 6BR, 6BRA, Dasher, etc.
Works only with short action cartridges.
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MasterPiece Arms BA Comp Chassis – MPA Rem 700 Short / Long
$1,390.00 – $1,590.00 Select options- This chassis will fit Remington 700, Defiance Deviant, Bighorn TL3, Surgeon 591, Curtis Custom, and Impact Precision Short Actions.
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MasterPiece Arms ( MPA ) Mag Feed Lip Adjustment Tool
$18.00 Read moreDescription
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 your loaded cartridge, then use this tool to make the necessary adjustments.
There is a single cut on the tip of the adjustment tool to engage the feed lips of these two types of magazines.
As a top ranked PRS shooter stated:Â âNo more ruining your mags by trying to adjust them with a multi-toolâ. I know Ive jacked up several of them so I sure others have also.â
Made from Aluminum, Cerakoted Black, and will not scar or scratch your mag finish.
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MPA BA Bolt Action Mount
$374.99 Select optionsThe BA Series Mounts are designed to mount high-performance optics onto your Bolt Action rifles with Picatinny Rail Scope Bases. The 1″ & 30mm versions have a center line height of 110%. 34mm models offer push-button fit for either aluminum or steel rails, while 35 mm and 36-inch long scopes can use the standard mounting hole pattern at either end, which measures 125 mils +/- .0015″. This interface ensures positive engagement on both spec positions and specs ones, so you don’t need specialized tools!
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MasterPiece Arms ( MPA ) Cheek Riser Pad
$13.99 Read moreProduct DetailsThis is a replacement Cheek Riser Pad. Self Adhesive and Laser Engraved with MPA Logo.
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MasterPiece Arms Matrix Chassis
$1,780.00 – $1,969.00 Select optionsThis is and enhanced version version of our highly successful BA Chassis System.
The Matrix Chassis was designed as a the most revolutionary chassis ever produced. With the 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 options. Please refer to the photos above to see our data on shooter preference on the grips, thumb rests, and trigger finger supports.
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MasterPiece Arms ( MPA ) Ultra Bag Rider
$59.99 Read moreDescription
Our new Ultra Bag Rider combines the benefits of the Enhanced Bag Rider design along with a Butt Hook feature.
This provides a rock solid rear support when using a rear bag when the shooter wants to pull the rifle into the shooters shoulder, improving accuracy performance due to the consistent shoulder pressure applied using this accessory.
The stability this rear bag rider provides is incredible, especially when shooting groups. If youâve ever had some challenges keeping the rifle ultra stable when prone, this accessory will improve performance.
This Ultra Bag Rider works with all BA, BA Comp, ESR, BA Hybrid & BA lite chassis that have a 3 hole pattern on the bottom of the buttstock.
It comes with a black Ultra bag rider, 2 Socket Head Cap Screws, and a turned step shaft designed to be inserted into the monopod slot for installation purposes.
This part is molded and has a lifetime guarantee.
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MasterPiece Arms ( MPA ) 2 round Magazine Extension
$49.00 Add to cartDescription
MPA Mag Extender is designed for 308 Box magazines built by AICS or Accurate Mag â single feed only. (Will not work with AW Mags). Simply remove the existing floorplate, remove the base insert (from the Accurate Mags only), depress the spring into the mag body, slide the mag extender in place and secure with the included 6-32 set screw. Make sure the mag spring has seated itself flush with the bottom of the mag extender.
Produced from 6061 Aluminum. Cerakote Black  and laser engraved.
Increases the magazine capacity to 14 rounds.
Specify Magazine Type (Accurate or AICS)/
There is also a version for 6BR case magazines. To get this extender type, please select the appropriate magazine type on the menu. These 4 Round extenders will work with MPA, Freedom Gunworks and PVA 6BR Kits.
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MasterPiece Arms BA COMP Chassis COMPLETE Weight Tuning KIT – MPA
$229.99 Add to cartThe Complete Weight Tuning Kit for the full size BA/Comp Chassis & ESR Chassis includes the following:
- Steel Enhanced Bag Rider – 1.2 lbs
- Steel Monopod Weight – 1 lb
- Front Fore-end Weight – 1.2 lbs
- Rear Fore-end Weight – 1 lb
- 8 Front Fore-end clamps
- 8 Button Head Cap Screws for the clamps
- Fasteners for Attaching the Bag Rider and Monopod Weight
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Gray Ops CNC MasterPiece Arms MPA Side Rail Inserts For MPA Matrix/ESR Chassis- Aluminum **** Will Fit Matrix Pro With Additional Side Rails
$84.99 Read morePURPOSE:
- Ergonomic gripping locations
- Light weight (1.6 oz each insert)
- Multiple Flush Cup locations for accessories such as the “Sikes Clutch”
FEATURES:
- Machined from 6061 Aluminum
- Black Anodize Hard Coat finish
- Includes (2) two inserts
- Each insert has 6 built in flush cup locations (12 total per pair) for each sling and accessory attachment
- Lightweight at 1.6 ounces per insert
- Hardware to attach to side rails included
NOTES:
- MPA Side rails purchased separately via MPA website
- Inserts only compatible with Side Rails from MPA
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MasterPiece Arms ( MPA ) AICS Mag Loader
$19.99 Add to cartThis mag loader works well with all AICS style Magazines
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MasterPiece MPA Matrix Professional Chassis
$2,080.00 – $2,280.00 Select optionsMasterpiece Arms Chassis have been the gold standard for Long Range Shooters for the past 8 years. In the PRS, which is the testing ground for the best rifle equipment produced, the MPA Chassis is the #1 Chassis (used by the most shooters), won more 1 and 2 Day matches and the most AG Cup Matches since the series inception. Our Chassis Technology is market leading, allowing shooters who run our chassis to hit more targets, win more matches, and harvest more trophies.
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MasterPiece Arms ( MPA ) Enhanced Bag Rider
$129.99 Add to cartProduct DetailsOur 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 âVâ) rear bag, such as the Protektor Series Rabbit Ear Design. It also provides an enhanced level of rear support for all long distance shooters, whether youâre a belly shooter or top level PRS competitor. This design has been successfully used this year at multiple PRS events by Team MPA Shooters.
The stability this rear bag rider provides is incredible, especially when shooting groups. If youâve ever had some challenges keeping the rifle ultra stable when prone, this accessory will improve performance.
This Enhanced Bag Rider works with all BA, BA Comp and BA lite chassis that have a 3 hole pattern on the bottom of the buttstock.
It comes with a black cerakoted bag rider, 2 set screws, and a turned step shaft designed to be inserted into the monopod slot for installation purposes. The side profile is notched to all use of the bottom flush cup for sling or bag attachment.
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MasterPiece Arms ( MPA ) Bag Rider with Flush Cup
$29.00 Add to cartThis bag rider design, with the included flush cup, was an idea from Dave Preston, winner of the 2015 PRS Series. The bag rider attaches to your MPA BA Chassis, Comp Chassis or BA Lite Chassis that has a threaded three hole pattern in the bottom of the buttstock body. Its general purpose is to allow a consistent management of recoil when using a rear bag.
The purpose the flush cup, as conceived by Dave, is used when shooting certain positional stances when a sling is used to provide support for the rifle. Have the rear connection point on the bottom of the rifle pulls the rifle downward, as compared to side positioned flush cups which can trend the rifle laterally.
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MasterPiece Arms Side Rails – For Matrix / ESR Chassis – Black
$179.99 Read moreCompetition Side Rails, designed for the Matrix or ESR Chassis, provide enhanced stability when shooting “positional” in PRS or NRL Style competitions.
Adds approximately 75% more width to the bottom of the fore-end, making the rifle more stable when shooting off positional bags. The radius section on the bottom of the rails provides a more comfortable grip of the fore-end when moving and changing positions.
The side rails are compatible with MPA weight tuning system and the Gray Ops CNC Side Rail Weights made specifically for the ESR/Matrix Comp Side Rails, available for purchase separately.
System includes:
- Left and right side rail
- 8 “M-lok Nuts”
- 8 fasteners for attaching the rails to the nuts
- 8 fasteners for attaching to the MPA Internal Weight System.
Compatible only with the Matrix & ESR chassis
Cerakoted black. Other cerakote options, available for an upcharge, include: FDE, Mil Spec OD Green, Gunmetal, Tungsten, Midnight Bronze, NRA Blue, and USMC Red. Please contact MPA if you want a custom color not listed, including Gun Candy.
See below for compatibility with various arca clamp products:
- MPA RAT Clamp & RAT Accessories – Compatible
- Area 419 Knob type Arcalock Clamp – Compatible
- GrayOps Mini Plate Pro – Compatible
- GrayOps Mag Cut Mini Plate – Not Compatible
- GrayOps Amp Elite Multi Plate – Compatible
- GrayOps Arca Rail Clamp – Throw Lever Style – Compatible
- Area 419 Harris Bipod Arca Clamp Kit – Compatible
- Really Right Stuff BTC-Pro Clamp – Not Compatible
- Really Right Stuff EVO-CA Throw Lever Clamp – Compatible
- Really Right Stuff SC-LR Throw Lever Clamp – Compatible
- Really Right Stuff HC-Pro Clamp for Harris Bipod – Not Compatible
- Cyke Pod Bipods – Compatible
- Cruxord Arca Clamp Tripods – Compatible
- Leofoto Acra Throw Lever Clamp Tripods – Compatible
- RRS Arca Throw Lever Clamp Tripods – Compatible
To summarize, most, if not all, throw lever clamps will work with our Comp Side Rails. Most Knob/Thumb Wheel Type Clamps will not function properly.
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Gray Ops CNC MasterPiece Arms MPA Side Rail Inserts For MPA BA COMP Chassis- Aluminum – Black
$84.99 Add to cartPURPOSE:
- Ergonomic gripping locations
- Light weight (1.6 oz each insert)
- Multiple Flush Cup locations for accessories such as the “Sikes Clutch”
FEATURES:
- Machined from 6061 Aluminum
- Black Anodize Hard Coat finish
- Includes (2) two inserts
- Each insert has 6 built in flush cup locations (12 total per pair) for each sling and accessory attachment
- Lightweight at 1.6 ounces per insert
- Hardware to attach to side rails included
NOTES:
- MPA Side rails purchased separately via MPA website
- Inserts only compatible with Side Rails from MPA
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MasterPiece Arms BA Comp Competition Side Rails – For BA Comp Chassis – Black
$174.99 Add to cartCompetition Side Rails, designed for the BA Comp chassis, provide enhanced stability when shooting “positional” in PRS or NRL Style competitions.
Adds approximately 75% more width to the bottom of the fore-end, making the rifle more stable when shooting off positional bags. The radius section on the bottom of the rails provides a more comfortable grip of the fore-end when moving and changing positions.
The side rails are compatible with the MPA internal weights and Gray Ops CNC Side Rail Weights, available for purchase separately.
System includes:
- Left and right side rail
- 8 “t-nuts”
- 8 fasteners for attaching the rails to the nuts
- 8 fasteners for attaching to the MPA Internal Weight System.
Compatible only with the BA and BA Comp chassis
Cerakoted black. Other cerakote options, available for an upcharge, include: FDE, Mil Spec OD Green, Gunmetal, Tungsten, Midnight Bronze, NRA Blue, and USMC Red. Please contact MPA if you want a custom color not listed, including Gun Candy.
See below for compatibility with various arca clamp products:
- MPA RAT Clamp & RAT Accessories – Compatible
- Area 419 Knob type Arcalock Clamp – Compatible
- GrayOps Mini Plate Pro – Compatible
- GrayOps Mag Cut Mini Plate – Not Compatible
- GrayOps Amp Elite Multi Plate – Compatible
- GrayOps Arca Rail Clamp – Throw Lever Style – Compatible
- Area 419 Harris Bipod Arca Clamp Kit – Compatible
- Really Right Stuff BTC-Pro Clamp – Not Compatible
- Really Right Stuff EVO-CA Throw Lever Clamp – Compatible
- Really Right Stuff SC-LR Throw Lever Clamp – Compatible
- Really Right Stuff HC-Pro Clamp for Harris Bipod – Not Compatible
- Cyke Pod Bipods – Compatible
- Cruxord Tripos – Compatible
- Leofoto Tripods with Throw Lever Clamp – Compatible
- RRS Tripos with Throw Lever Clamp – Compatible
To summarize, most, if not all, throw lever clamps will work with our Comp Side Rails. Most Knob/Thumb Wheel Type Clamps will not function properly.
We will continue to update this list.
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MasterPiece Arms BA Comp Chassis – MPA Tikka Inlet – Short Action AICS Mag – Flat Dark Earth
$1,390.00 Add to cart- This chassis will fit Tikka Actions Only
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MasterPiece Arms ( MPA ) EVG Left hand insert
$24.99 Add to cartThis 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 attach to your chassis via 2 oblong bosses on the insert plus double sided 3M PSA adhesive. Very simple, quick and easy to install.So if you are left handed shooter and want to be able to utilize the benefits of the EVG, this is a great option. -
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MasterPiece Arms ( MPA ) 2 round holder
$19.99 Add to cartThis new 2 Round Holder is designed to fit onto any MPA BA Competition, Standard Chassis, Hybrid, CSR or BA Lite. This is designed for Short Action Calibers with a 0.472 bolt face. (308, 6.5 Creedmoor, 6.5×47 Lapua, 6 Dasher, 6 BR, etc, etc).
The design of the holder presents the round at a slight angle, making it easier for the shooter to grab hold of the back of the cartridge for quick removal.
The system attaches to any of the six oblong slots on either side of the magazine well.
- Using an Allen wrench, loosen the set screw in the “Chassis Mount” component and slide the unit out of the oblong slot.
- Tighten the set screw to secure the Chassis Mount component into the oblong slot.
- Attach the 2 Round Holder to the Chassis mount via the button head cap screw that is included.
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MasterPiece Arms ( MPA ) Mag Block Insert
$14.00 Add to cartMag Block Insert
This 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 Cut Action), to eliminate the gap before the AICS mags make contact with the action. However, we have also found these very useful for eliminating feeding issues when a competition shooter is putting weight or pressure on either the bottom or front of their magazine, such as when shooting from a barricade.
When installing these, after you have verified fit and tested with a magazine, we recommend that you remove the insert and place some adhesive to the top flat surface to make contact with the top of the pocket in the mag slot in the chassis. Superglue or similar is recommended.
Slight polishing may be required for proper fit. You will receive (1) Version 1 and (1) Version 2 inserts with each order. Please watch the video below for installation instructions.
