MAC TAC daddy of all chassis! Part 1

DSC_0829Are you look for a chassis for your Rem 700? Do you want to go to the range and have everyone go, ooooooh! When you pull out your rifle?  Then you need this one!!  The TAC 21 chassis from  MDT.  Check this review out!

One thing you always look for whether you are a Sniper, Expeditionary Designated Marksman and or Long Range Precision shooter is the rifle!  Rifle is what makes you, you.  But once you decide the caliber, make and model you want to make the weapon system yours and that is when the chassis comes into play.  What kind of chassis do you want?  I chose the MDT TAC21 for my Rem 700.  I felt that this TAC 21 chassis had what I needed and ordered it.

IMG_1139          IMG_1140

It arrived in the mail and I was very excited about it and took it out of the box.  Then I do what everyone else does and piece it together and drooled over it.  I could not wait to make this mine.  The chassis came into 4 pieces and super simple to put together.  (instructions are easy to read and if you do not like reading I found a “how to” video on YouTube).  But first I will add my touch.

IMG_1149I picked out a pattern on the computer as a stencil and picked the colors.  Since I am in the desert region, I went a head and picked earth colors.  Great half way there!!




I then took my time to remove my Rem 700 from the old stock and there I had it.  Completely nude as you would say!  One of the hardest things you need to do is remove the trigger assembly and place it into the TAC 21 chassis.  It takes some time and again if you do not know, please refer to YouTube because they have tons for you to see what to do.

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Once together I dressed it up with a scope, bi-pods and of course me.  Plus, coming in at only 8 pounds makes it unbeatable for chassis’   But I can not have all the fun.  Check out what MDT has to say about it:

Looking for a stock replacement for your Remington 700, Savage or Tikka T3 Bolt action rifle, turning it into a tactical and highly accurate system?
Our TAC21 Chassis system for bolt action rifles offers a combination of improved accuracy, superior ergonomics and specialized design allowing use of AR-15 butt-stocks, grips and automatically converts your rifle to an external box magazine fed rifle.
The TAC21 can be installed in 30 – 45 minutes without the need of bedding and has proven results with up to 28% accuracy improvements.


tac21 v-shaped beddingThe action sits in flat spots inside the action housing and is the only contact point for ultimate accuracy.

Our TAC21™ chassis system 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 hard anodized to mil spec type III for extra strength, and has been finished with Cerakote™ in Black or Flat Dark Earth (FDE).

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

TAC21 End CapThe end cap features a quick release lever which is tightly locked in place, allowing quick removal of the buttstock and bolt.

Inherently the TAC21™ 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 comfort.


The TAC21™ 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, 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 and .338LM)
  • Tikka T3 – Short Calibers (.223 and .308 bolt faces)
  • Tikka T3 – Long Calibers (.300WM, 6.5×55, 7mm, 30.06). Requires MDT 3.560 Magazine.
TAC21 Fore end mountingSlightly offset tapered holes ensure the fore end is pulled tight against the action housing


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

The TAC21™ 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 fore-end 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.

TAC21 Sling Swivel StudFore end has sling swivel stud installed, which can be removed to install a rail for rail mounted bipods.

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.


  • 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
  • Hole spacing for Magpul L5(11slot) and L3(7slot)Rails
  • Lightweight, free-floating modular fore-end
  • 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

Now you want this chassis don’t you!  Well stand-by for part 2 and see what’s next for this chassis!  Until then head over to MDT and see what they have for you!

Click for MDT


One thought on “MAC TAC daddy of all chassis! Part 1

  1. Pingback: Tactical TAC21 Part 2 | Gunner's Mate & EDM's Military Gear

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