Our first rifle chassis, the TAC21 was designed and developed by Laszlo Klementis, MDT’s founder. Laszlo was a machinist by trade, with a passion for competitive shooting.

After a couple of years on hiatus from shooting, Laszlo decided to get back into the sport, and was in the market comparing options for his next precision rifle chassis or stock. At this time, back in 2008-9, there weren’t nearly as many options for people as there are now, and affordability was a real issue, so Laszlo began to draw up and create his own version of his ideal rifle chassis.

On his 17th rendition of what is now the TAC21, Laszlo attempted to get a prototype made, quickly realizing that the current design was much too costly to become a reality. He went back to the drawing board, now working backwards with materials and costs at the forefront of his mind. On version 21, the prototype was completed and the MDT TAC”21” (21st rendition) Chassis became a reality, and the rest is history.

Since then, the TAC21 is onto a Gen2 version, with an M-LOK compatible forend, an ambidextrous magazine latch, a more secure and adjustable locking end cap, and a slightly more aggressive barricade stop.

 

DETAILS

Our TAC21™ Gen2 chassis system is a combination of benchrest accuracy, superior ergonomics and specialized design. This chassis brings the bolt action rifles to the next level in versatility and modularity, with an instant improvement in accuracy.

The chassis system is manufactured out of billet 6061-T6 aluminum, which has been finished with Cerakote™ in Black or Flat Dark Earth (FDE).

TAC21™ Gen2 chassis is engineered to minimize warping and distortion. The rifle receiver only makes contact with the TAC21™ Gen2 chassis on the V shape bedding and recoil lug area insuring the best accuracy and repeatability. The generous clearance on the forend makes any barrel (diameter up to the receiver size – 1.350”) free floating.

Inherently, the TAC21™ Gen2 has a straight-line design, meaning that the recoil comes straight back instead of making the front of the rifle kick upwards. This results in more accurate and quicker follow up shots. This also translates to a decrease in felt recoil and increase in comfort.

COMPATIBILITY

The TAC21™ Gen2 chassis system is currently manufactured for the following bolt action rifle platforms:

• Remington 700 Short Action (.223 and .308 bolt faces)
• Remington 700 Long Action (.300WM, .338LM, 7mm RM, 30.06)
• Savage Short Action, Models 10, 11, 12 and 16 (.223 and .308 bolt faces)
• Savage Long Action, Models 110, 111, 112 and 116 (.300WM)
• Tikka T3 – Short Calibers (.223 and .308 bolt faces)
• Tikka T3 – Long Calibers (.300WM, 6.5×55, 7mm RM, 30.06). Requires MDT 3.560 Magazine.

Please note: For Savage Long Action in 338 Lapua Magnum: Savage Long Action Chassis Systems all use 3.715″ AICS magazine wells. The model 110BA in 338 Lapua Magnum uses 3.850″ magazines and have recently switched to a thicker recoil lug which will not fit our TAC21 Gen2 chassis. We do however have our ESS Chassis available for this model.

MOUNTING AND COMPATIBLE ACCESSORIES

The TAC21™ Gen2 chassis is designed to accept any AR-15 butt-stock or our Skeleton Carbine Stock and pistol grip (purchased separately), offering the option to customize from the wide variety of Accessories available on the market.

The TAC21™ Gen2 chassis uses external box style magazines in .223 and .308 caliber for Short Action and .300WM or .338LM magazines for Long Action rifles, and supports installation of bolt on MIL-STN-1913 accessory mounting rails on the forend and side of the action housing. Mounting holes are spaced for Magpul style L5 (11 slots) and L3 (7 slots) rails (1.600” / 3.200”).

With a top full length MIL-STN-1913 accessories mounting rail. The built-in mounting rail has 20 MOA (Minutes of Angle) on the action housing and is parallel to the barrel axis on the fore-end.

Note: Long action magazines come in 3 different lengths: 3.715″, 3.775″ an 3.850″. Our chassis use 3.715 magazines. If you purchased the Remington 700 Tactical Chassis Rifle, the magazine well is 3.775.

SPECIFICATIONS

• Increases accuracy by up to 28%
• CNC Machined from 6061 aluminum
• Cerakote Finish in Black or Flat Dark Earth
• 20 MOA built in top rail
• The action housing has 2 threaded holes on the opposite side of the bolt handle for attaching a Magpul or MDT L3 bolt-on rail
• Lightweight, free-floating modular forend, M-LOK compatible
• Will accommodate barrels as thick as the action
• Compatible with AICS style magazines in .223 or .308 (SA) and 300WM, 30.06, 338LM (LA). (Long Action Magazine length 3.715)
• Weight: 3lb – 3.6lb

WHAT YOU GET, AND WHAT YOU NEED

The TAC21 Gen2 chassis system comes as a 4-piece chassis, with all required mounting hardware included. This includes new action screws, and a screw for the pistol grip.

To complete this chassis on your rifle, the additional items you need to purchase are:

• Any AR-15 buttstock or our Skeleton Rifle Stock
• A buffer tube for your buttstock. (Both milspec and commercial work on our chassis for carbine buttstocks and require a castle nut)
• An AR-15 Pistol Grip
• At least one magazine

For a lighter, more compact chassis, please also see our LSS, LSS-XL and XRS Chassis Systems.

DIMENSIONS