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Reaction Rod – Armorer’s Multi-Platform Upper Receiver Holding Tool

Reaction Rod – Armorer’s Multi-Platform Upper Receiver Holding Tool

$125.00 USD
$125.00 USD
Sale Sold out
Shipping calculated at checkout.

114 in stock

The Nefarious Arms Reaction Rod is a must-have tool for armorers and builders. Designed to securely hold your upper receiver in a vise, it is inserted through the rear of the upper receiver to lock into the barrel extension. It allows for precise installation or removal of muzzle devices, barrel nuts, and other components. The upper receiver can be indexed on the reaction rod for assembling the ejection port door and forward assist as well. 

  • Clamping Wing Nut Prevents Shearing of the Index Pin when Torquing the Barrel Nut
  • Rubber O-Ring Protects the Barrel Extension
  • White Zinc Coating for Anti-Corrosion

Made in the USA from durable steel with a corrosion-resistant zinc finish

Compatible with: 

  • Mil-Spec AR Uppers 
  • HK 416
  • MR556 / MR223 
  • KAC SR-15
  • KAC SR-16 E3 Barrel Extensions  

Whether you’re building or maintaining, the Reaction Rod ensures safety, strength, and precision.

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Let customers speak for us

from 5 reviews
Kirby Ballard

The shipping was lightning fast, and the website was easy to navigate. Nothing more to say, it was a great shopping experience :)

Nefarious Arms
Anonymous

Great gas block. The fit and finish were exemplary, and the knob was nice and movable, making it easy to turn with the tip of a bullet from various angles. Gassing on a brand new MR556A1 barrel was perfect with the factory-installed 1mm vent screw, giving 1:30-2:30 ejection on N and 3:30-4:30 ejection on S with a B&T SRBS installed. Wonderful product and a great price for everything you get!

NA5 - HK 416A5 Style Adjustable Gas Block
NA5 - HK 416A5 Style Adjustable Gas Block
Mark Milovich

Smooth simple transaction

Nefarious Arms
Mark Milovich

Very nice finish, excellent fit. I like the pin locations have dimpled centres, makes drilling that much easier. Having both the HTX and Nefarious I prefer the latter.

M110 / MKII Gas Block
M110 / MKII Gas Block
BZWS LLC

These are pristine, brand new, unmarked German A3 stripped uppers. They’ve never been assembled. The finish is perfect. Well worth the money.

HK416 A3 Stripped Upper Receiver
HK416 A3 Stripped Upper Receiver