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Questions & Answers
What steel is this made of? Expert Answer

The JP Enterprises High Pressure Enhanced Bolt Assembly Group is made of SAE 9310 Steel.

by Hunter, Gear Expert, June 10, 2022
what is the diameter of the firing pin hole in the bolt face Expert Answer

The manufacturer dose not state the diameter of the firing pin hole, you will have to contact the manufacturer for specifications of this product.

https://jprifles.com/2.1.php

by Patrick, Gear Expert, September 3, 2021
Customer Reviews
Helpful Positive Review
JP full mass bolt group by BB2020, Verified Owner, December 31, 2020
Built a new creedmoor ar10 with Criterion barrel and they suggested to use JP . Pricey I thought but was worth every penny . It’s shines working and I would tell anyone that they should not be worried of the higher prices . Buy once - cry once
5/5 found this helpful
Helpful Positive Review
Fixed my primer crater in my 6.5CM LR308 by Andy, Verified Owner, August 11, 2022
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.
3/3 found this helpful
Helpful Positive Review
It's works as advertised... by JRR, Verified Owner, September 4, 2021
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
2/2 found this helpful
Helpful Negative Review
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 pr...
Read More...
3/3 found this helpful
Most Recent Reviews
Solved my primer piercing by TerraStryker, Verified Owner, October 22, 2025
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 prim...
Read More...
Most Recent Reviews
Needs work by Sean, Verified Owner, September 6, 2022
So I had a faxon complete BCG, was using it with a faxon match barrel chambered in 6.5creedmor. Had an issue with punching primers, so after some research decided I needed a high pressure bolt. Once installed my BCG failed the stand test, but I took ...
Read More...
5/9 found this helpful
Read All 10 Reviews
10% Bonus Bucks
Get even more OpticsPlanet Bucks with the purchase of select models to use on future purchases! You will find the amount you'll earn near eligible models.
Finish: Black DLC Caliber: .308 Winchester Gun Make: AR Platform Gun Model: AR-10 Condition: New

Code: J5-BCG-VCXE-JPBC-EB308HP

MPN: JPBC-EB308HP

UPC: 812872020761

10% Bonus Bucks
List: $228.95Save $11.45
$217.50

Product Info for JP Enterprises High Pressure Enhanced Bolt Assembly Group

Kit includes bolt assembly, firing pin, cam pin and retainer pin. This version of the bolt is compatible with the JP LRP-07 and the DPMS LR-308 platforms (or clones thereof) only and cannot be used to replace bolts in the Armalite AR-10 platform (or clones thereof).image

Specifications for JP Enterprises High Pressure Enhanced Bolt Assembly Group:

Manufacturer: JP Enterprises
Finish: Black DLC
Carrier Material: 8620 Steel
Bolt Material: Steel
Caliber: .308 Winchester
Gun Make: AR Platform
Gun Model: AR-10
Condition: New
Projectile Caliber: .308 Caliber

Package Contents:

  • JP Enterprises High Pressure Enhanced Bolt Assembly Group

JP Enterprises High Pressure Enhanced Bolt Assembly Group Orderable Models

List of Orderable Models

  • JP Enterprises High Pressure Enhanced Bolt Assembly Group, .308 Win., Black DLC, JPBC-EB308HP , MPN: JPBC-EB308HP , UPC: 812872020761 , Code: J5-BCG-VCXE-JPBC-EB308HP
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