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The WarBlock High T-4 Receiver Height AR15 Gas Block is now in stock!


The WarBlock High T-4 is now in stock and orders are open! They are available as a stand-alone unit to pin yourself (highly ill-advised unless you know what you are doing) primarily for gunsmiths, armorers, manufacturers, and highly technically proficient DIY with the tools and the know how. They are also available already professionally pinned to the CMMG line of barrels using standard taper pins. In addition there is also an option to send in your unpinned barrel for WarBlock pinning.

WarBlock flyer website

This video details a lot of the main points behind why the WarBlock is superior to mounting your BUIS to the forearm rail as well as many of the advantages it has.

Rounded out with the maximum versatility of rail mounted flip-up sights without sacrificing the proven robustness of the standard front sight base. In fact the WarBlock is the best of both worlds offering a hard mounted platform for the plethora of flip-up front sights while maintaining the lightweight and ruggedness of the standard front sight base.


-Receiver level 1913 Picatinney Rail
-Reinforced standard bayonet lug
-Intergral QD sling swivel socket
-Weighs only 4oz., less than the standard FSB at 5.5oz.
-Pins securely to barrel using standard taper pins
-Fully CNC machined from hardened 4140 billet
-Salt Bath Nitrided finish

The pre-release sale price is only $87 + free shipping! That is a steal! This sale will not last long as that price is a loss leader to promote earning an early customer base while we’re working out the kinks of production.

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Please support us and help us take this product mainstream!

2 Responses

    1. James Dressman

      Hi Joshua,

      Since we are out of stock of WarBlocks, we have a notify list. If you would like to be on it just email [email protected] and ask to be put on it. You will receive an email when we are nearing completion of the next production run. I’ll go ahead and add you to the list.

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