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ADM UIC 13.9" CORE Patrol Rifle

The 13.9" CORE Mod 2 Patrol Rifle is designed to be a well-balanced fighting rifle for tactical shooters who utilize weapon lights and laser aiming devices. The CORE Barrel profile was designed to address issues with weight distribution, balance, and handling of traditional profiles, while increasing performance through consistent harmonics and uniform heat dissipation. The Surefire Warcomp/ SOLGW 9-Port NOX is pinned and welded to make the barrel length greater than 16.1" which makes this a rifle. Built on a billet aluminum, fully ambidextrous upper and lower receiver set, the UIC Mod 2 is the Flagship Carbine of the UIC line.

CORE vs Hybrid Profile Barrel Contour
The CORE Barrel Profile is a continuous taper and is about 4 ounces lighter than the standard Hybrid Profile Barrels we offer. This barrel profile was designed to aid in balancing the rifle specifically when using lights, lasers and suppressors by keeping most of the weight on the chamber end of the barrel, at the mid-point of the rifle.

NOTE: ALL FIREARMS MAY HAVE up to a 6-8 WEEK LEAD TIME AFTER RECEIPT OF FFL. All firearms are Built To Order. The build process will begin when ADM has the order and a copy of the customer's FFL where the firearm will ship to. Orders will sit pending until the FFL is received.

Please have your dealer email a copy of their FFL with the Customers Name and Order Number in the subject line to FFL@ADMMFG.COM.

While American Defense MFG tries to stay current on all state laws, it is the responsibility of the customer to ensure that the firearm they are purchasing is legal to ship, as presented on our website, to their dealer of choice, and that the dealer is willing to accept the transfer.

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CORE Barrel Features

  • Nitride Finished for superior barrel life and corrosion resistance
  • .223 Wylde chamber that is designed to safely and reliably fire both .223 REM and 5.56 NATO
  • Honed and hand-lapped rifling produce perfect bore uniformity
  • Finely polished chambers for reliable extraction and feeding
  • Gas port tuned for proper function with and without suppressors
  • Continuous taper designed for optimal weight, balance, and performance
  • Precision-machined barrel extension with M4 feed ramps

Lower Receiver

  • Fully ambidextrous controls
  • Enlarged bolt catch 
  • Right side bolt catch and release lever
  • Left side magazine release
  • Talon ambidextrous safety selector
  • Competition style mag well
  • Enlarged trigger guard
  • Geissele G2S trigger
  • Black MOE grip
  • Black MOE-SL stock
  • ADM 10 position buffer tube
  • ADM HD buffer
  • ADM lightweight castle nut
  • QD endplate
  • Optional Law Tactical folding adapter (uses milspec endplate)
  • Integral upper/lower tension adjusting screw

Upper Receiver

  • 13.9" CORE Series .223 Wylde, 1/8 Twist, 4150 CMV Nitrided Criterion barrel
  • 13" MLOK handguard
  • Premium BCG with a Nitride QPQ finish
  • Raptor ambidextrous charging handle
  • MLOK handguard
  • Surefire Warcomp or SOLGW NOX Keymount muzzle device (Pinned and Welded to 16.1")

**Model specifications may change at any time due to component availability**

Materials & Construction

  • Aircraft Grade Billet Lower and Upper Receiver
  • Hard coat type 3 Mil-Spec anodized or Cerakote finish for a lifetime of performance
  • Made with pride in the U.S.A.


  • Weight: (unloaded)
  • 13.9” Rifle: 6lbs 5oz

FFL Terms and Conditions - Any items placed on the same order as a firearm/lower receiver will also be shipped to the FFL. If you would like additional items shipped to you directly, please place them on a separate order. To expedite your order, please have your dealer fax or email their FFL to us. If the dealer you are using to transfer a firearm has not sent us a currently updated FFL to put on file, there will be an extended period of time needed to process your order. Due to the high volume of orders, please allow up to two weeks for delivery of firearms. Email:

The coolest just got cooler

Originally had one of these in a 14.5 inch setup. Now we have the 13.9 which I had to pickup. w00t!

My favorite rifle

I was a big fan of BCM, and after owning 3, never thought I’d like something better. I’ve now owned this ADM for about 2 years now, and let’s just say my BCMs are mediocre compared to this. Everything about this rifle says quality. I shoot/instruct 3 days a week. Whether I’m shooting suppressed or not, this thing runs better than everything else I own (BCM, Geissele). I also get the opportunity to shoot other manufacturer’s products during my classes, not even DD or Sig compare to this. And since I mentioned shooting suppressed, the BCG, bolt, and rifle in general wipe right off, making it so I don’t have to waste my time scraping or soaking to get the carbon off. If you’ve been on the fence about it, I promise you won’t regret getting one. Like the old saying goes: “Don’t skimp on life saving equipment.” - unknown

About 99% of what I need/want

Excellent handling rifle. Balance is as advertised even with a suppressor and light mounted. Accuracy is what I would expect and has been consistent even with high/moderate volume schedule. Ambi controls are intuitive and solid; my only gripe is I would have preferred a pinned gas block instead of just the set screw dimpling. No issue with the gas block, just that extra step for peace of mind. Otherwise, fantastic rifle.