AT3 Tactical 16" 5.56 NATO Pencil Barrel AR-15 JNL Ready Build Kit – M-LOK / Magpul CTR

from$608.32$715.67Save $107.35MSRP $720.27
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Product description

AT3 16 Inch 5.56 JNL Ready Build Kit – Pencil Barrel M-LOK Rifle Setup

Features

  • Just Needs Lower kit includes an assembled 16 inch 5.56 NATO upper plus the parts needed to complete a stripped AR-15 lower receiver
  • Lightweight pencil-profile barrel keeps the front end easier to handle than heavier government-profile builds
  • Mid-length gas system pairs well with the 16 inch barrel for a smoother carbine setup
  • Assembled upper includes AT3 billet upper receiver, SPEAR M-LOK handguard, black nitride BCG, and selected charging handle and muzzle device
  • Lower build components include Magpul CTR stock, MOE pistol grip, Magpul trigger guard, buffer tube kit, lower parts kit, and AT3 enhanced Nickel Teflon trigger group

The AT3 16 inch 5.56 JNL Ready Build Kit is built for customers who want the upper receiver already assembled and only need to supply a stripped AR-15 lower receiver. This kit pairs a lightweight 16 inch pencil-barrel upper with Magpul CTR furniture and an upgraded AT3 Nickel Teflon trigger group, giving the build better handling and a cleaner trigger than a basic rifle kit.

Note: This kit includes an assembled upper receiver and lower build components. Stripped lower receiver is not included, and lower parts are not assembled. Built-to-order upper assemblies may require additional processing time before shipping.

Specifications

  • Brand: AT3 Tactical
  • Model: 16 inch 5.56 NATO JNL Ready Build Kit with Pencil Barrel and M-LOK Handguard
  • Caliber: 5.56 NATO
  • Build Type: Just Needs Lower / assembled upper with lower build components
  • Upper Receiver: AT3 assembled billet upper with SPEAR M-LOK handguard
  • Barrel Length: 16 inches
  • Barrel Profile: Pencil profile
  • Twist Rate: 1:7
  • Gas System: Mid-length
  • Gas Block Journal: .625 inch
  • Muzzle Thread: 1/2×28
  • Bolt Carrier Group: AT3 Black Nitride BCG
  • Trigger: AT3 Enhanced Nickel Teflon Trigger Group
  • Stock: Magpul CTR Stock
  • Grip: Magpul MOE Pistol Grip
  • Trigger Guard: Magpul Trigger Guard
  • Buffer System: Carbine buffer tube kit
  • Color Options: Black, Flat Dark Earth, OD Green

What’s Included

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Customer reviews 7

Matt Williamson Verified buyer
Great beginner build kit it's complete with everything you need except the lower. I enjoyed the process start to finish, learned some things along the way. Brought it to the range Sunday. Minimal adjustments need spot on every shot

AT3 Tactical · Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

Christopher Zackery Verified buyer
This is my first AR but I have shot a lot of them. I have seen a bunch of my friends build them and they all love this AT3. Many of them after shooting it say they wish they had found a deal like this when they were looking. The finish is awesome the lines are slick. The way the rail meets the upper is beautiful and a very nice touch. I built this upper on a spikes tactical lower and it fits phenomenally. Nice and tight. No wiggle. I chose the grey option. It's quiet enough to not say look at me but when people see it up close they love it. The grey adds a nice classy touch. Everything operates smoothly and I have not had a single operational issue with it after about 1800 rounds shooting all kinds of diffrent ammo. Price plus quality... I highly recommend anyone looking to build to check AT3 out first. Can't wait to build a 300 blackout using you product AT3. Thanks again for the quality and top notch customer service.

AT3 Tactical · Thanks for sharing your feedback, Chris. We're glad you're satisfied with your purchase. Cheers!

Jayson Powell Verified buyer
This complete kit is excellent! The fit and finish was perfect, not a single complaint. The trigger feels great, everything assembled super smooth. Definitely will be buying from AT3 again!

AT3 Tactical · Thanks for sharing your feedback, Jayson. We're glad you're satisfied with your purchase. Cheers!

Jase Verified buyer
This is a great deal on a great build kit. Once you get the lower this kit is ready to rock n roll. No issues at all.

AT3 Tactical · Thanks for sharing your feedback, Jase. We're glad you're satisfied with your purchase. Cheers!

Peter Figueroa Verified buyer
When I first stumbled upon AT3 I was in the market for a 223 kit that was not only affordable but a true value and I found it ! This kit is the best bang for your buck , most kits try to sell you a substandard barrel with mediocre parts BUT not AT3, the Ballistic Advantage Barrel is the heart of this kit and if you ask any AR enthusiasts they will all tell you it comes down to the quality of said barrel. The upper assembly is as tight , no gaps , this looks like a high end rifle through and through! And how many kits offer cerakote colors without an upcharge, no one but AT3 , This is my new favorite of my 223s and if your worried about no forward assist ,DONT, you'll never need it with this beauty , the action is so smooth ! My next kit will be the same but in OD Green , don't miss out you will regret not getting one especially if one of your buddies does , THANK YOU AT3 FOR EXCEPTIONAL SERVICE AND A QUALITY WEAPON , YOUR MY NEW GO TO STORE !!!

AT3 Tactical · Thanks for sharing your feedback, Peter. We're glad you're satisfied with your purchase. Cheers!

Johnny Baggins Verified buyer
Got the complete kit + a couple upgrades. Packaging was great. My favorite is the FDE coating on the hand guard & upper receiver...smooth and looks great. Zero complaints from me. Solid value at that price. Paired mine with the green laser LEOS and an Aero Precision FDE lower. I'M HAPPY!

AT3 Tactical · Thanks for sharing your feedback, Johnny. We're glad you're satisfied with your purchase. Cheers!

Dillan Carpenter Verified buyer
The only thing I didn’t like was it came with a Magpul milspec stock and a commercial buffer tube, I think if your selling a complete kit u should be able to build it without having to change the parts it comes with

AT3 Tactical · Thanks for sharing your feedback, Dillan. We'll make sure to send compatible parts moving forward. If you need help with anything, please don't hesitate to reach out to us.

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Warranty & returns

Backed by the AT3 Lifetime Warranty!

90-day no-hassle returns

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

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