NOTE: There is a QR Code on the box your gas block comes in. That QR Code takes you to the installation video page. This product's installation video has been updated. 
 
LEAD TIME: Ships Immediately
 
There are a ton of gas block options on the market and a lot of them do not create an effective seal and this can lead to poor function of your rifle. The gas port of your barrel is set to allow the necessary amount of gas pressure to build and run the rifle, if you have a poor seal between the gas block and barrel, this can be a factor in poor reliability in function.
 
The EPA-625 (our gas block for .625 journaled barrels) fixes this issue by using extreme temperature seals that contour to a barrel's gas block journal creating a positive interface between the two components. Secondly, the steel our gas blocks are made from is 4140 and has a complementing thermal expansion rate with steels used to make barrels.   
 
Each EPA-625 comes with a roll pin for gas tube installation, armorer preferred knurled cup set screws, two high temp seals, and an allen wrench. It is also designed with a flat top and bottom so it can be clamped into place by an armorer and pinned with the correct alignment to a barrel. When installing the gas block, please lightly lubricate the journal surface prior to sliding the gas block into place as this will help the seals "slide" over the journal surface easier. Once aligned, use a small amount of red Loctite on the set screws and torque the screws to a minimum of 26 in/lbs. 
 
We have a more in-depth installation video on our "How To" page, please review the content prior to installation. 
 
Specs: 
Designed for Barrels w/ a .625" gas block journal
Body Material: 4140 Steel
Two (x2) High Temp Seals
Two (x2) 3/32" Hex Screw w/ knurled-cup included (Torque Spec: 26 in/lbs)
One (x1) Gas Tube Roll Pin
One (x1) 3/32" Allen Wrench included
Weight: 1.8 oz.