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Serious Armorer’s Tools for Serious AR Builders

Posted on July 12th, 2016 by ar15news

As an avid AR owner/builder I have lots of experience piecing together rifles and the tools that are required to do that. I’ve used pretty much everything from the super cheap to pretty pricey when it comes to Armorer’s Tools. Most of your “inexpensive” Armorer’s Tools are, for the most part, made for the AR owner who will build a rifle once or twice a year and are prone to marring you rifle parts and tend to break during use. Some just flat out don’t work as advertised and are a “jack of all, master of none” type of design. I’m always looking out for the next must have armorer’s tools. Geissele Automatics did it with their Reaction Rod and now it looks like Fire 4 Effect has done it with their new F4E AWS (Armorer’s Wrench Set). 

Instead of one wrench that is supposed to do everything, the F4E AWS consists of 3 separate wrenches including a Barrel Nut Wrench, Castle Nut Wrench and Muzzle Device Wrench. This design made it so the portion of the wrench you are trying to use is positioned in the center with an extended handle on both ends of the wrench. On each of those handles are cutouts for use with a torque wrench and the suggested torque settings are actually etched on. The Castle Nut Wrench has an amazing design to it that doesn’t allow it to tear up your castle nut or buffer tube and the Barrel Nut Wrench features 9 points of contact that are all replaceable if one gets bent. Just seems like an extremely well thought out set of wrenches. Check out the pics, video and details below. 


The Fire 4 Effect team is proud to announce the F4E Armorers Wrench Set! Developed by Master Gunsmith and former Army Marksmanship Unit NCOIC Matt Haidu the Armorers Wrench Set or AWS consists of a Barrel Wrench, Castle Nut Wrench and Muzzle Device Wrench.

Fire 4 Effect AWS Armorers Wrench Set

Manufactured from water jet cut mild steel that has been CNC milled, laser engraved with a custom cerakote finish the AWS is designed to provide a lifetime of use for the AR15 armorer. Each wrench has a life time warranty.

Key Features:
The Barrel Nut Wrench provides 9 points of contact on the barrel nut and features hardened steel roll pins which can be easily replaced by the individual armorer.
The Castle Nut Wrench uses recessed castle nut lugs for improved lock up during assembly and disassembly. The Castle Nut Wrench also doubles as a Receiver Extension / buffer tube wrench.
The Muzzle Device Wrench features a alignment groove to assist armorers while indexing muzzle devices.
Torque wrench attachment points have the corrected torque wrench calculation engraved on the Muzzle Device Wrench.
The Muzzle Device Wrench also features shoulder inlets to accommodate crush washer expansion.
All wrenches incorporate 2 handles for balanced manual torque application during assembly or reassembly.


Individual Wrench Price:
– Barrel Nut Wrench: $129.99
– Castle Nut Wrench: $119.99
– Muzzle Device Wrench: $79.99
– Complete AWS Price: $300.00

If you are a serious AR build, not just a once a year builder, you will definitely need to get your hands on a set of these awesome wrenches. Fire-4-Effect offers a 10% MIL/LE discount with appropriate credentials. You can order your AWS at

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