D-Tech - Custom AR-15 Upper Receivers
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Dedicated Technology - Home of the Dtech AR!

_Dedicated Technology strives to make the highest quality after-market upper receivers possible by offering a wide variety of options to customize your weapon to your exact liking. Drawing from decades of experience, owner-operator Mike Milli produces and continues to develop new product lines; most recently the DTI Line AR. Workmanship, attention to detail, and friendly customer service are what Mike's customers have grown accustomed to and what you can expect from Dtech!


AR-10 uppers and barrels now available!
.22 Creedmoor
6mm Creedmoor
.243 Winchester
6.5 Creedmoor
.260 Remington
7mm-08 Remington
.308 Winchester

.338 Federal
call for pricing.

*.224 Valkyrie uppers now   shipping!*


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WSSM Upper Conversion

The basic custom upper conversion features a Shilen match stainless barrel with my ventilated, three-piece hand-guard. It also features my new, clamp-on, low-profile gas-block, and flat-top upper receiver with forward assist. Each upper comes complete with bolt/carrier, charging handle and magazine.  These uppers can be used with any, un-modified, mil-spec lower receiver.  You can switch from .223 Rem. to .25 WSSM in 20 seconds!  I am now using the Magpul anti-tilt followers as a standard feature in all of my WSSM magazines.  By using these followers, I have increased the reliable capacity of the magazine and enhanced the reliability of the upper.

...more on WSSM

_The DTI Line AR
Back in the summer of 2009, one of my customers from Iowa asked me about a 6 mm cartridge that would be somewhere between the 6 x 45 and the .243 WSSM.  He already had a .223 Remington upper, as well as a .243 WSSM upper, but just wanted something a little less expensive to shoot than the WSSM, and something with more horsepower than the .223.  
...more on the DTI

_Dtech Float Tub  
My new free-float tube is finally finished.  Over the last 18 years of working with, and building uppers, I have gotten increasingly disappointed with the commercially available float-tubes on the market.  Most are of the two-piece design that forces you to accept whatever torque you end up with when the barrel-nut is correctly timed-up to the receiver.  My new float-tube has a two-piece barrel-nut that allows you to get perfect alignment for the gas-tube, without respect to torque.  This also allows you to have the vents and sling-stud always time-up perfectly.  The float-tube can be installed. removed and reinstalled as many times as you wish, and you will never have to worry about your sling-stud ending up anywhere but bottom-dead-center!

_AR-15 Upper Recievers

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_WSSM Upper Recievers

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_Custom AR Barrels

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_Dtech Float Tubes

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