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MPA MasterPiece Arms BA Comp Chassis

$950.00 $869.95
(You save $80.05)
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Product Description

We have RH, SA, 700/Clone stocks on hand for immediate shipment! No CC fees, free CONUS shipping.
The 700 inlet is very accepting of most clones.  If you have a compatibility question not answered in the below list please contact us, we're happy to assist!
We order chassis with the oversize barrel inlet that will accomodate barrels up to the MTU contour as a standard feature.  
Rem 700 standard inlet fits the following clones:

Bighorn TL2/TL3
Bighorn Origin
American Rifle Company Mausingfield
American Rifle Company Nucleus
Defiance Deviant w/ cutaway bolt handle
Defiance Rebel w/ cutaway bolt handle
Stiller Tac 30
Surgeon 591
This is the competition version of the highly successful BA Chassis System.
In addition to the standard features as shown below, here are the special enhancements that are designed to give shooters who utilize our competition chassis a competitive advantage when shooting in Long Range Tactical Rifle competitions such as the PRS series and related events:
  • Rotating Barricade Stop – locks the rifle in place when shooting on a variety of barricade designed stages
  • Additional Hole locations on the Fore-end for locating the rotating barricade stop
  • Trinity Rail System. This is used to attach a bipod to the chassis much closer to the mag well when shooting off oil drums or similar props to provide the shooter a rock solid setup. This rail is designed to be added and removed based on the needs of the stage you are shooting.
  • Modified Magazine well to allow side loading of a magazine into the chassis. This is known as the “Ryan Castle” magwell cut.
  • Elimination of the Monopod system to reduce overall chassis weight.
  • Bag Rider attachment for better rear bag recoil management.
  • Standard Features
  • Machined from 6061 Aluminum
  • V-Bedding System
  • MPA Buttstock with Adjustable Cheek Riser and Length of Pull
  • A2 Pistol Grip
  • Front Night Vision Bridge
  • Lower Picatinny Rail
  • Multiple QD Sling Swivel Locations
  • User Located Side Rails (option)
  • Durable Cerakote Finish in a Variety of Colors
  • Unique Pocketing System reduces weight and increases structural integrity of the chassis
  • Adjustable Length of Pull 13.75-14.75″
  • Recoil Pad is adjustable for Height and Cant
  • Adjustable Cheek Riser
  • Built in Bubble Level
  • Machined Thumb Notch
  • Our Chassis take any AICS type magazines (Mag not included). See related products for magazines for your chassis.
  • 4.9 lbs
  • As of 20 April 2017 the RH Competition Edition comes with the MPA Vertical Competition Grip as a standard feature, LH Chassis do not.
  • As of 01 May 2017 production date, all "Gunmetal" chassis color have changed to Cerakote's standard "Gunmetal" and not the custom blend from MPA.
  • All chassis will see a 20% restocking fee for cancellation after 24 hours of order placement.
  • Chassis are non-returnable except by prior agreement with PVA Management.

This unique chassis system provides a super precision platform for the Remington 700 Short and Long, Savage and Howa Short or Long Actions, Badger M2013, Mausingfield, Surgeon, Stillers, Surgeon and many others. New inlets are being added frequently.

Whether you’re increasing the accuracy capabilities of your existing action due to the V-Bedding System as well as adding tactical features to your rifle, or building a super precision rifle for long range competitions, the MPA BA Chassis will provide a world class chassis system sure to exceed your expectations. We also inlet for Tikka T3, Badger M2013, Surgeon 591SA & 1086 LA and others.

The V-Bedding system is also configured to allow the ability to glass bed the action and straight section of the barrel if desired. 

The chassis is machined on our CNC Horizontal Machining Centers to exacting tolerances from 6061 aluminum. The MPA produced Buttstock includes an adjustable length of pull, recoil pad with height and cant adjustment, adjustable cheek riser and adjustable Monopod. 

Length of pull is between 13.75-14.75″ although this length can be modified by thinner or thicker recoil pads. Weight is 5.2 lbs.Coating is Ceramic (Cerakote)  – all available in a variety of colors. The upper Night Vision bridge provides a seat for a picatinny rail. A matching rail is mounted to the bottom of the chassis – both giving the shooter plenty of rail space for a variety of enhancements. 

The maximum barrel profile on our chassis, without modification to the barrel channel, is an M24 contour. If your barrel has a larger profile, please contact MPA to discuss. We can go up to a 1.250 straight profile, but need to know at the time of order.

For Savage Actions, our Chassis will accommodate both Top and Bottom Bolt Release configurations.


Delivery for non-stocked items may be up to 10 weeks depending on which chassis inlet is ordered, stock configuration, Cerakote Color and other options or specials that may be requested by the Customer. We will make every effort we can to get your product out as quickly as possible. If you have any questions or concerns about the lead time, dont hesitate to ask. Please remember, this is a hand built precision instrument and not a production component.

Custom Cerakote Colors add $135 for the chassis body.  Check with Patriot Valley Arms for all the custom colors available.


Free shipping on the chassis is available when combined with the separate purchase of a barreled action, or a pre-fit match rifle barrel.  Questions regarding free shipping can be directed to  Expedited shipping is available on a case by case basis due to the custom nature of these handbuilt chassis systems.


IMPORTANT NOTICE: Insurance on the package is at the buyer's discretion. The shipping insurance option will not be automatically added.  If a customer elects not to ship the action with insurance and something happens during transit Patriot Valley Arms will not assume any liability whatsoever. 

Product Reviews

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  1. Top notch gear 5 Star Review

    Posted by on Jan 11th 2018

    This chassis has all of the newest and desirable features relevant to PRS style competitive shooting at a reasonable price.


    Posted by on Nov 1st 2017

    The headline says it all. If you shoota PR sport and don't use this chassis you are shorting your self.

  3. SUPERB CHASSIS 5 Star Review

    Posted by on Aug 8th 2017

    The MPA BA COMP chassis tungsten is a perfect fitment for my Savage 10-FCP 6.5 CM. This is a high quality item and relatively a bargain compared to other chassis at a higher price point. Although PVA typically does not stock these semi-custom chassis - Josh was very responsive to status inquiries as it incurred 3 months for delivery, but well worth the wait. Josh was receptive to my other questions regarding other brands inlets, fitments, custom builds - looking forward to next transaction with PVA!

  4. very well thought out chassis design 5 Star Review

    Posted by on Jul 25th 2017

    This chassis is a very well thought out platform for prs style competition, and also works extremely well for hunting. Like any other metal based chassis it will require gloved hands in the winter! Lol! If you have any questions just ask Josh! He is extremely knowledgeable about the products he sells. He was able to answer questions that I had about this chassis better than the manufacturer!

  5. Great CS 5 Star Review

    Posted by on Jul 14th 2017

    PVA was able to answer all the questions I had pertaining to the MPA BA Comp Chassis. I know PVA is busy, and that they do not manufacture the chassis, but their support of items they stock did not go unnoticed and was greatly appreciated. I purchased the chassis from PVA since MPA has a 8-10 week lead time. I purchased the item July 5th, and because of the holiday I did not expect it to ship quickly. The item however was delivered to my home on July 8th. PVA exceeded my expectations and will have my business in the future.

  6. Well thought out product 5 Star Review

    Posted by on May 1st 2017

    I received my MPA chassis 4 days before a weekend competition. There was a some hesitation in wanting to change my entire rifle right before a competition but dropping the action and barrel into the chassis was simple and straight forward. I really liked how easy it was to set my comb height with just he turn of the dial, the competitor chassis that I had previously required the loosening of 4 screws and then trying to tighten and loosen over and over until I got the proper height. The MPA was so easy to be able to rest my head on the pad itself and watch as my eyesight would go from not being able to see through the scope to being directly inline. Once I got the correct height I could lock in the height with two screws located on the guide rods on either side of the main adjustment knob. This made the pad rock solid. The same was true for the length of pull, no needing to mess with loosening and tightening screws over and over, just turn the knob until it was comfortable and then tighten the screws to lock it in place.

    My match was more of a field practical match so I was not able to test out many of the features of the stock including the trinity rail or barricade stop but the thing I got to try the most was the arca swiss cuts in the chassis themselves. It locked right in place with my RRS leveling head and I could not believe how rock solid and stable it was. I never dropped a shot when using my tripod, and was even able to make hits out to 1000 from full standing!
    Another overlooked but amazing feature is the built in bubble level, it made it very convenient to look down at the level and then back up through the scope without having to move my head at all.

    One accessories I would consider getting for the MPA chassis is the new MPA vertical Grip. I did not receive mine until the night before the competition and again went normal practice and decided to install it on my chassis and run it for the weekend. Needless to say I won't be going back to my old grip! For some it might take some getting used to but the thumb shelf was amazing and the ergonomics of the grip worked perfectly for me and even helped to promote a more straight back trigger press.

    I will probably be ordering another MPA chassis for another build!

  7. Great Chassis! 5 Star Review

    Posted by on Apr 2nd 2017

    Great chassis. Very easy to set-up and get shooting. The features packed into this chassis are excellent. Josh was great to work with!

  8. PVA and MPA perfect match 5 Star Review

    Posted by on Oct 21st 2016

    Purchasing the MPA competition chassis from PVA was the perfect experience.
    The chassis is bar none the best I have used and is much more refined than the others in the market today.

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