J P ENTERPRISES - AR-15/M16 ADJUSTABLE GAS BLOCKS

Easy to install, affordable, secure, and effective. I put this on a Colt Hbar barrel under an older MI Gen 2 free float hand guard. The hand guard fit over the top but was touching the top left and right sides of the gas block. I ended up taking a flat bstrd file and filing the top slot about 3/16. This made it clear just fine. Also, now i can adjust both set screws without removing the guard. I have this thing adjusted to only lightly cough the shells out suppressed but not lock the bolt back at the end. Smooth Action! My eyes don't even blink when i pull the trigger from the prone position, and there is less gas going back through the system at me. If you don't like it? Move the screw a bit. Easy!

Got this block in preparation for putting a suppressor on my 308 AR. Instructions on tuning were excellent. Set screw to lock in the adjustment is outstanding setup. Tuned it and the gun functions like a dream. I will be getting 2 more for other 308 ARs. I love the clamping effect of the 4 screws at the bottom, the composition of steel that you can really put a some torque into the clamp and make sure it never moves again. The adjustment is easy to access and it comes with a long allen wrench that can be used if the block is under a forend stock. I will now be putting this block on any more custom builds I do. The best one out there IMHO. JP did it again!

If you want to keep your front sight post and be able to adjustable your gas pressure this is a great way to go. Getting it straight up and down is a challenge but if you get the clamp taught you can play around with it until it's good. The finish is very good.

Purchased for installation on a DPMS LR-308T. Was having problems since day one with this rifle. Would short stroke or over travel right out of the box. DPMS was no help whats so ever. I guess they figure a $700 rifle should only work part of the time... I changed the gas block with the non-adjustable JP block, swapped the rear with the JP recoil reducing buffer and tuned spring and the Mako recoil reducing stock...You'd think that would've done it, right? Wrong...still over traveled. Tried every brand name of cartridge, reloaded with 4 types of powders and bullets, same thing over and over again. Finally talked to the Brownells Tech and he recommended this gas block and honing out the chamber. Took 18 minutes to install and 11 rounds to tune...GUESS WHAT?? This DPMS gutter scrap works like it should of from day one. The recoil is like shooting a 5.56. With the same setting I shot all the brands of ammo and every reload I made for this thing. I only had to adjust it once after 22 rds. After 80 rds I checked the torque settings, (which are listed in the outstanding directions), for any movement, everything was perfect. Had a nice pile of brass 9' away and with no marks, where as before, it was a mangled mess scattered everywhere. I'm happier than a goose in the frying pan. Thank You Brownells and JP.

Most AR's are very over-gassed which creates a harsher recoiling cycle than needed. This block allows you to tune it down for an overall smoother shooting rifle. Install was easy except for the gas tube roll pin. It fit very tightly in the hole and was not easy to get in. because I had to bang on it so the one end flared open a bit so it didn't fit in all the way but enough to hold the gas block in place and luckily it just gets hidden inside the hand guard and doesn't matter too much so I will forgive it. After that install was very easy and straight forward. Adjusting the gas system was easy and took less than 10 rounds. Just remember if you want to shoot it with many types of ammo they recommend you open it up a quarter turn more than is necessary to insure function with all loads and not just that one. This is what I did and it still shoots much softer and smoother than the traditional gas block.