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Product Description

The MPA BA Custom Build system gives the shooter many options options to help design the Ultimate Long Range Precision Rifle. Just pick your action, caliber/chamber,  barrel length and contour, trigger (pull weight) and cerakote customization (in color or pattern).

You can also add an optic and our MPA BA Mount to have the rifle “range” ready, including barrel brake in, zero and load development. We work with some of the best optic manufacturers in the world to enhance the performance of your rifle. These include optics from Kahles, Swarovski, Bushnell, Leupold, Nighforce,  and Others and can offer some very healthy discounts on the cost of these optics.

For the load development option, we will discuss the specific objectives of the customer, including a variety of factors. The rifle will be delivered with 20 rounds, fine tuned to match your rifle, including a report showing brass type and prep methods, primer type, powder type and weight, projectile type and weight, plus projectile loading depth and ogive location.

We can also provide reloading tooling, scales, gages and accessories to perform your own reloading using the best equipment on the market.

If you want to have your action bedded, we can also include this in the build.


Here are some of the chamberings we have produced: 223, 223 AI, 6mm Creedmoor, 6mmXC, 6mm Dasher, 6mmBR, 6×47 Lapua, 6SLR, 243 Win, 243 AI, 6.5 Creedmoor, 6.5×47 Lapua, 6.5 SLR, 6.5×284, 6.5×300 Weatherby, 6.5 Addiction, 6.5 SAUM, 270 Win, 7mm Rem Mag, 7mm Ultra, 7mm SAUM, 280AI, 308, 300WM, 300WSM, 375 H&G, 338 Lapua, 300 Norma, 338 Norma and others.

Action Options:

We can provide actions from Defiance,  Stillers, Impact, Big Horn, Kelblys, American Rifle Company, BAT Machine, and Curtis Custom as well as others to build the rifle of your dreams.



We use our MPA/Spencer Barrels – available in a variety of Contours, these 416R Stainless Barrels are handlapped to perfection. Checkout the link above for more information about these barrels.


We can provide your trigger from Jewel, Trigger Tech, Bix N Andy, Timney, Huber and others.

Chassis System:

There are multiple chassis options for your custom build:

MPA BA Chassis

MPA BA Competition Chassis

MPA BA Ultra-Lite Chassis

MPA CSR Chassis

MPA Hybrid Chassis


All Builds in 6.5mm or smaller carry a 3/8 MOA Accuracy Guarantee

All Builds larger than 6.5mm carry a 1/2 MOA Accuracy Guarantee

Caliber, Chamber and Twist Rate

Calibers and Chambers and Twist Rates: At the time of order, please specify your perferred caliber, chamber and barrel twist rate. Click here for our available options.  Or simply contact MPA with any questions regarding these options.

Please contact Phil ( or Woody ( to discuss the details of your custom build.

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