MDT ESS Chassis system kit
MDT
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The ESS provides ultimate ergonomics and features!

The MDT ESS chassis is designed with its own buttstock for perfect ergonomics and is designed to use AR15 style pistol grips (purchased separately), and allows for customization with a wide variety of accessories.

The ESS Chassis System includes chassis, fixed buttstock and 15" forend without rail.

Note; Pistol grip & magazine & other accessories are not included.


  • The sale is available for products that are in stock only, that arrived in stock PRIOR to 1/9/24 - this web site does not feature live stock availability to check availability of a product & if it is included in the sale, please email; mcavoyguns@aol.com or call 01257 426129.
  • For in store customers items not included in the sale will generally be identifiable with an orange ticket.
  • All items must be paid for in full before 30/11/24.
  • All purchased guns must be collected before 30/11/24.
  • Sale discount can not be used in conjunction with, or in addition to any existing special offers.
  • Existing store credit / items already reserved / existing orders are not included in the sale.
  • We may accept part exchanges, though this will be on a very limited basis.
  • The seven day trial that we usually include with used goods will not be available during this period (you do still get our 3 month's repair warranty)
  • All items will be on a first come, first served basis.
  • The following products are not included in the sale; Bulk ammunition & other products which have quantity discounts already applied or items which are already on special offer.
  • Services we offer are not included in the sale, for example gun repairs, storage, transfer fees, shipping fees etc.
  • We reserve the right to withdraw the sale at any point without notification.
  • The above terms & conditions are in addition to our regular Terms & Conditions, which you can read by clicking here

    • There is no live stock control on this web site, to confirm availability, please call on 01257 426129, or click here to email

    • Weight: Chassis system including forend and buttstock is between 4.4 to 4.8lbs (depending on action)
    • Length of Pull: 13.4" - 14.4" (Based on Remington 700)
    • Ambidextrous, easy reach magazine latch – can be operated with trigger finger or left hand
    • The extra large magazine well for easy mag insertion/removal
    • Barricade stop in front of the magazine to prevent putting pressure on the magazine
    • Angled front profile with hand grip for minute vertical adjustments and comfort/protection from the elements
    • Thumb rests on both sides of the chassis
    • Wide front profile for extra comfort/stability when resting on flat surfaces
    • Stock height at comb and heel – 0.5” below bore centerline. 1.0” of riser adjustability
    • Allows for barrel contours up to 1.300” straight taper. (Note that at larger barrel diameters there is less space in the forend to accommodate internal attachments such as QD cups, M-lok, and sling swivels)
    • Accepts AICS pattern magazines for both short and long action. (3.715” long action)
    • Accepts aftermarket lugs up to 0.375 thick and tapered
    • Compatible with all non-beavertail AR pattern pistol grips. Beavertail grips will fit with minor trimming
    • CNC machined from Aircraft grade Aluminum and finished with H-series Cerakote. Cheek-piece, fore-grip, and butt-pad constructed of composites

    Compatibility

    • Remington 700 Short Action
    • Remington 700 Long Action
    • Savage Short Action, Models 10,11,12 and 16
    • Savage Long Action, Models 110, 111, 112 and 116
    • Savage Long Action CIP .338 Lapua Magnum - Requires MDT 3.85" Magazines
    • Savage Axis - Short Calibers
    • Tikka T3 Short Calibers
    • Tikka T3 Long Calibers - Requires MDT 3.56 Magazine
    • Howa 1500 / Weatherby Vanguard - Short Caliber - Only works with MDT Polymer Magazines - No V-block due to the flat bottom action
    • Howa 1500 / Weatherby Vanguard - Long Calibers - No V-block due to the flat bottom action
    • Browning X-bolt Short Calibers - Only works for 308 Winchester, 6.5 Creedmoor, 243 Winchester
    • Ruger American Short Action
    • Winchester XPR Short Action
    • Lithgow 102 SA
    • Bergara B-14

    What is inluded & what you will need to purchase separately.

    The ESS Chassis System comes complete with a chassis, buttstock, and a forend. All hardware is included. You will need Allen keys to assemble and install on your rifle.

    In addition to the ESS Chassis System, you will need:

    • An AR-15 pattern pistol grip, grips with a beavertail will require minor fitting
    • An AICS pattern magazine appropriate for the rifle chambering

    IMPORTANT NOTES;

    LITHGOW 102 SA

    For .223 models the bolt stop may be too long. This can easily be modified by removing the bolt stop and trimming the contact face.

    WINCHESTER MODEL 70 SA

    The ESS Chassis for Winchester Model 70 has been designed to accommodate all Winchester short action 308 and 243 actions made after 1984, as well as all FN-H branded receivers (such as the SPR and TSR). The easiest way to tell if your Winchester Model 70 was produced after 1984 is that the action screw spacing will be approximately 7-1/8”. Prior to 1984 Winchester made 308, 243 etc on long action receivers, which will be too long to fit into the ESS chassis.

    223-based calibers will not feed reliably, and WSM calibers will need feed lip adjustment for reliable feeding. WSSM calibers will not work.

    The chassis will fit MOA, Winchester and Timney triggers.

    The chassis will have to be used with MDT 308 metal magazines, which have specifically been designed with a narrower interface at the top near the front of the magazine to fit into the Winchester Model 70 action. MDT and Magpul polymer magazines will work, but require some material to be trimmed from the feedlips and front corners of the magazine.

    Some of the CRF guns will need the ejector fitted to clear the magazine, or the magazine notched.

    Some guns will have the anti-bind lug drag on the right-hand magazine feed lip.

    There are two scope rail screw spacings. Pre-2006 they are all the same. 2006 to ~2009 the standard caliber stayed the same, and the WSM had a longer spacing. After production was moved to Portugal they all switched to the WSM spacing. The rails MDT is making are the WSM spacing.