Guntec USA Red AR-15 Low Profile Gas Block .750
Ratings & Reviews
Looks incredible, but not entirely functional.
by Tim -
I received this product a few months ago as an upgrade for my 300 blackout pistol build. The red color really pops underneath my FDE handguard, and all was well the first few times shooting the gun. However, as I began to shoot the gun more I found the gas system to be ineffective in cycling my rounds after about 30 rounds down range.
<br>After taking apart my gun I found the gas block to be loose from the gas vent in the barrel, which explained the cycling issue I had. I fixed it, believing I simply was in error with my installation of the product, only to find the next time I shot that the actual roll pin from the gas tube was beginning to come out as well. This leads me to believe that this product does indeed expand like one of the other reviews on it, and that it is unfit even for leisure shooting.
by Roger -
<br>Came with the pin.
Nice accent, but impractical...
by Topher -
Being aluminum, these expand with heat causing them not to seal and release most of the gas in doing so.