It also goes by the name "AR-Restor Hydraulic Recoil Buffer".

I bought one of these a week or so ago to put in a new lower build to go with my gas piston upper. Today (before the Bowl - GO STEELERS!!!) I tried the lower with both the standard H-Buffer and the Enidine, and the Enidine is simply incredible.

There is no obvious weight difference between the two and I had no issues whatsoever as far as bolt lock-back on last round, bolt release picking up the first round of 20 and 30rnd mags, etc. Everything functioned as normal.

When firing from a bipod, there is simply zero sight picture movement. I can keep the crosshair perfectly on target and fire as fast as possible with a standard trigger. I was able to dump mags in about 20-30 seconds and have every round land within a 2.5" group.

When firing while standing, there was just a slight muzzle rise, but it was much more manageable now because it just pops straight up a few mm, instead of jumping around more.

Without the Enidine on the bipod, the sight picture would jump around significantly, even with a firm grip on my ACE K-Grip which is mounted an inch in front of the mag well. I would have to pause to re-set the crosshair on the target, and there was no way to do real accurate rapid fire shooting.

Now this is probably not something you need if you have a muzzle brake, which does control muzzle rise significantly. But for those of us with Vortex flash hiders or similar, the Enidine really is quite an addition to your setup.


- rem

good to know

14 pages of it here