701 Air - Hyperbloc100 and Valve Housing Upgrade for FX Impacts

Got this for my m4 and sent it to Utah Air guns to have it installed. Unfortunately they weren’t able to because the screw holes were misaligned that connect it to the rifle. They told me they had 15 other hyperblocs in stock but all of them had the same problem. really wanted this to work. Hopefully the get the machining tolerances figured out soon

I needed to open the mounting holes with a round file, worked great

Had to wait for the 2nd Gen because I didn't see the notification in time before they sold out the first Gen, then when the second Gen came out with a 50$+ price jump I almost didn't purchase one but I'm glad i swallowed my pride because I like Ernest R as a fellow air gunner. Had absolutely no problems installing because my IQ is just a touch higher than my M4 and the HB -100, now for the good part, was able to lower the reg pressure from 155 bar to 120 bar,valve turned in two full turns, hammer spring adjustment wheel from 8 down to 4 and it's launching my hand swagged .25 cal 40.5gn.dbhp@ 1025fps. Thanks Ernest for a product that does what it's supposed to do

After installation I'm giving this product 2 stars because the 4 tapped holes in the top of the Hyper Bloc 100 were slightly misaligned. After 2 hours of trying everything to get all four screws started I used a 2 mm drill bit to elongate the 4 backbone holes about a half mm so I could get the screws started. They were a very tight fit at that, but I think I got them in without cross threading or stripping them out. I didn't take it apart to find out. Disappointing that I had to remove metal off the perfect backbone of my M4 for a $350 aftermarket part. In my case the second batch also has problems. Out of the thousands I've spent on aftermarket parts this is the first miss fitting thing I've purchased.

very well made lots of thoughts went into this does what it supposed to and then some.. now awaiting another..

very well machined plenum works as should

good product! Fast delivery!