Reviews & Ratings for JP Enterprises High Pressure Enhanced Bolt Assembly Group — 12 reviews — Page 1

Everything seems in order very nice bolt a bit pricey haven’t tried it hope it’s worth what I paid

Purchased after having some primer punctures and signs of overpressure with factory Norma 140s. Installed this group and it worked ideally on my Aero M5 6.5CM. Very pleased. Quick service and shipping.

I'm using an AR-10 for hog hunting but needed to use non-military rounds which don't have military primers and I was getting a lot of primer piercing, especially with match grade primers. This was happening even with things like Winchester large primers for my 308. Pretty much everything I used at least had cratering or lipping. I tried everything I could think of and even had the manufacturer warranty it but even the new upper from the manufacturer was still getting pierced primers. I broke down and bought this bolt and it fit directly into the AR-10 and I haven't had even primer cratering or lipping since. Recommend 100% to solve your problems before you waste $400 trying to figure out a different solution. This is the best option for fixing primer problems in an AR-10 if you're going to use something other than extremely hard military primers. (PMC x-tac match ammo didn't have primer problems but I wanted a solution where I could use ammo in general instead of one specific brand that can change its primers at any point)

I bought this brand new bolt from here. After only 30 rounds of factory Sellier and bellot ammo, the bolt face has actual pitting along w/ the extractor/plunger being broke/pitted off. I am not talking about the typical staining you get around the primer pocket, this is ACTUAL pitting (dimpling into the steel). I have owned many bolts (both AR308s and AR15s) never seen pitting from this low round count.

I contacted JP enterprises about this, sending them detailed pictures, all they said was it was fine, and now they are ignoring my emails.

They don't stand behind their products, and apparently offer no warrnty. I will post a more detailed review w/ pictures on their google reviews in the upcoming few days.

I will never buy another JP enterprises item again.

Jp has Well made products. Great fit for my 6.5 Creedmoor

Very nice bolt... this bolt is first quality for my 6.5 creedmoor built. Great fit, no flaws. go jp!

Dropped right in to my PSA M110-A1 bcg. Will be my main bolt and will keep the PSA one for backup. No additional gas tweaking or weight adjustments. Added the Pof roller cam pin and this thing is like butter.

Eliminated 6.5 CM primer punctures by using this bolt.

This bolt uses a smaller firing pin hole than what's usually used in 308 style bolts in semi-autos. I no longer see any primer cratering on my cartridges. The finish and machining on this bolt is also top notch.

I replaced my Aero bolt with this JP's and what an improvement. My previous loads, shoot nicer my primers aren't deformer after shooting any longer, much better performance, my groups have also improved. Thanks JP's