As precision rifles continue to increase in popularity, manufacturers have responded to the demand. Twenty years ago there were just a handful of decent stocks on the market, precision rifle shooters had limited options. That has changed. The precision rifle shooter now has a wide range of stock, chassis and accessory options readily available.
Modular Driven Technologies (MDT) has been in the chassis and accessory market for some time. They offer a wide range of chassis priced for various budgets that fit a variety of actions. Looking to expand into the competition market, MDT worked alongside some of the industry’s top shooters to develop the ACC (Adjustable Core Competition) chassis.
Like many products I have on hand, I like to wait to see how well they perform in the long term. The ACC was no exception. I’ve had two, one for a Remington 700 style action, shown in the photos below, and the other for a HOWA 1500. I decided it was time to offer my thoughts on it.
Like other MDT products, the ACC is machined from Aluminum, uses a integral V-block system to bed the action and adds a detachable magazine system to your rifle.
- Surgeon 591 short action
- Bartlein heavy varmint barrel
- Timney 510 trigger
- Nightforce BEAST 5-25×56 F1 scope
Similar to MDT’s other chassis designs, the solid aluminum ACC includes a detachable magazine system that uses AICS style magazines. The fore-end and action section of the chassis are made from one piece of aluminum, while the stock is a separate assembly.
The ACC has a long, wide fore-end. The sides and bottom of the fore-end have M-LOK slots for attaching accessories. The inside of the fore-end accepts MDT’s proprietary fore-end weight system that can internally add up to 2.6 pounds to the weight of the rifle. This weight system offers competitive shooters a means to tame the recoil of their rifle through increased mass, leading to quicker follow up shots.
The wide bottom of the fore-end is machined for a full length Arca rail allowing for the attachment of newer style bipods, tripods and shooting accessories along the entire surface. When not in use with the Arca rail accessory, the width and perpendicular sides are useful for improvised shooting positions, especially against barricades.
The ACC includes MDT’s Skeleton Rifle Stock. This stock has fine adjustments for length-of-pull and comb height. The cheek piece and recoil pad are also adjustable, providing a more precise fit for the shooter.
The front of the magazine well on the ACC is textured to provide a solid mounting point against barricades. The magazine release is wide and easily accessed with the shooter’s fingers.
MDT’s vertical pistol grip adjusts to provide an ideal, customized trigger-reach for optimal finger placement. I especially like this feature.
I’ll be posting groups and performance data from the ACC in a series of upcoming posts; but as a bit of a spoiler, I’ll share the 5- shot 100 yard group I shot above with factory Hornady 140 grain ammunition .324″ (.309 MOA)!
My thoughts on the MDT ACC?
- Solid chassis design. I really like shooting the ACC, the combination of the wide long fore-end and MDT’s vertical pistol grip make for a smooth handling rifle.
- Accurate. Like all of MDT’s chassis design, the MDT ACC shoots very well. I’m shocked I was able to pull off a .309 MOA 5-shot group at 100 yards with factory ammunition.
- Excellent fore-end. The inclusion of a full length Arca rail, M-LOK slots and integral weight system greatly enhance the usability of this system.
- Adjustable. I like the adjustments on the ACC, the knurled knobs and graduated markings on the stock make set up fairly straight forward.
- Not just for competition. While the MDT ACC was clearly designed for PRS style shooting matches, its handling characteristics make it ideal for use at most long range or precision shooting venues. I’d image this chassis would be well suited for any training class you might attend.