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Product Overview

ADBR PLUS 5.56 - You asked and we listened! During several conversations with ATAC Defense dealers and customers we kept getting the same question. "Can we get nickel boron bolts and oversized charging handles for the basic rifle?” We heard your request, and the Basic Plus was born. This rifle has all the features of the "not so basic rifle", but upgraded with the nickel boron bolt and oversized charging handle. 

Download The ATAC Defense ADER Owners Manual

  • 5.95lbs
  • OAL:  32.5-35.5 inches 
  • LOP:  10.75-13.75 inches
  • Lifetime Limited Warranty

At ATAC Defense: quality, reliability, accuracy and fit/finish are our greatest concerns.

We believe in holding a quality level that is far above "mil-spec". 

All of our components are handpicked and tested by the marksmen that design our rifles.

Our upper and lower receivers are machined "in-house". We perform this critical task ourselves so we can insure proper fitment, without slack and rattle.

Each ATAC Defense firearm is hand assembled with our inspected, tested and approved components.

After assembly, each firearm goes through a test fire session and is re-inspected. Each firearm must pass our final inspection before it can be shipped to the customer. 

This product can only be shipped to a valid FFL holder.

When ordering, please enter your FFL's address into the shipping field. Include their contact email or phone number in the notes field so we can exchange FFL's.

      Build SPECS

  • LOWER RECEIVER: CNC Machined from 7075-T6 Forging, Mil-Spec with Flared Magazine Well, Broached Magazine Well, Ambi Bullet Markings, Threaded Bolt Catch, Captured Rear Detent, Cerakote Finish
  • UPPER RECEIVER: CNC Machined from 7075-T6 Forging, Mil-Spec with M4 Feed Ramps, Cerakote Finish
  • BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP/HP Tested, Properly Staked 4130 Gas Key,8620 carrier, 4340 cam pin, 8640 firing pin, 4340 extractor, S7 ejector, Nickel Boron Coated
  • BARREL: 4150 CrMoV barrel per *Mil-B-1159SE 1:8 Twist, 16.0" Government Profile, HP/MPI Tested, 5.56 chamber, 6 groove button rifled, .750 diameter at gas block, 1/2x28 thread, nitride coated.
  • MUZZLE DEVICE: A2 Birdcage Flash Suppressor, phosphate coated
  • GAS SYSTEM: Low Profile CNC Machined 4140 Hardened Steel Phosphate Coated gas bock, Direct Impingement, 304 stainless steel gas tube
  • RECEIVER EXTENSION: 6 Position Mil-Spec 7075-T6, Aluminum Anodized, Mil-Spec End Plate, Mil-Spec Nut Torqued and Staked
  • BUFFER: Carbine Buffer, Mil-Spec spring
  • HANDGUARD: 6061 Free Float, Using Knurled Barrel Nut, M-Loc attachment points, Cerakote Finish
  • CHARGING HANDLE: 7075 Aluminum Ambi, Type III Hardcoat Anodized
  • BUTTSTOCK: Mil-Spec M4 type
  • PISTOL GRIP: Mil-Spec A2 Pistol Grip
  • Lower Parts Kit: Built to Mil-spec standards, semi auto configuration


(8 reviews) Write a Review

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  • 5
    Great rifle

    Posted by Tht1guy63 on Jan 24th 2022

    Found at my LGS and fell in love with it. And love how i have it in .223 wylde. Love its also made fairly local to me only about 35 mins out, love being able to support local.

  • 5
    ABDR Plus

    Posted by David Benkert on Jun 25th 2021

    It arrived quickly, which is awesome. The lock up is tight. no slop no rattle. The mechanics are smooth. Great rifle.

  • 5

    Posted by Jim F on Apr 2nd 2021

    Tested this at the farm last weekend on steel at 50 yards was really good

  • 5

    Posted by Greg B on Apr 2nd 2021

    Great rifle accurate and runs good

  • 5
    Atac Defense Basic Plus 5.56

    Posted by Randy L on Mar 31st 2021

    I found you guys from a review of this rifle in firearms news. I was most impressed when the writer said he did not have a single failure with any ammo he tried. I ordered, and it was at my dealer in 5 days. I have only ran 1500 rounds through so far, but this thing is great. I will be ordering an enhanced version from you soon.

  • 5

    Posted by Don on Dec 24th 2020

    Great rifle, the guys answered all my questions over the phone and shipped it out fast! Shoots amazing but I’m already out of ammo.

  • 5

    Posted by Glenn Scott Ryder on Dec 9th 2020

    Great weapon!!!

  • 5
    GREAT - AR!

    Posted by Scott Ryder on Aug 19th 2020

    Great rifle!!!!