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Sharps Rifle Company Xtreme Performance Bolt XPB Balanced Carrier Group
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Most Helpful Positive Review If you thought about it, buy it.
Bought this for my 300blk build. All the hype is true. Of all the bcg I've had. This one was the best. She runs flawlessly. Very easy to clean. Best upgrade I done. Ordered another for my current 556 build. If you thought about buying one. Just get it. You'll be happy you did.
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So far its been great!

by mtn Yoda, from NV, United States Written on February 7, 2025
I own somewhere around 13-15 BCG’s. Some very expensive and others not so much. This is my second BCG from Sharps Rifle and the XPB line. I will say that the gas rings lock the bolt up tight and needs a little bit of time to break in if you have a gas system that is a little anemic or gas port. I use these in SPR’s that have 18” premium series BA fluted barrels that have .093 gas ports. The speck on your typical MK12 is .998 to .101 (or very very close without looking at crane chart. I actually had to open up the gas port on these barrels to .098 and the bolt runs excellent. Ejection is at 3’oclock with grain 77 OTM. Going to a heavier buffer to get a hair closer to 4’oclock. When you get into these rifles, the timing is everything and needs some tinkering. The blast are very smooth and the finish is very nice. I think for the money, it’s a great value. I have other nickel boron BCG’s from Spikes, Tool Craft, WMD, as well as DD and BCM. My preferred bolt is the Sharps but time will tell. My first SRC purchased in 2023 has held up very well and gets a lot of rounds through it.
Pros:
  • gas key is staked very well
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

not what I was expecting

by wej, Verified Owner from TX, United States Written on March 24, 2024
Finally put this in one of my ar’s to give it a shot at the range, I had a lot of issues with the gun once dropping this bcg in. The worst part of it was the shell casings just dribbling out of the ejection port. I swapped a few buffers into the ar with no change. Didn’t matter if it was suppressed or unsupressed, I still had the same issues. The coating on this bcg is awesome. That’s about the only positive thing about it.
Pros:
  • coating
Cons:
  • everything
Best Used for:
  • Display piece
Would recommend: No
0 of 6 found the following review helpful.
Was it helpful to you? Yes | No

Great bolt carrier

by Stallion, Verified Owner from MI, United States Written on March 20, 2024
Nib x is soo smooth even without oil. Was delivered crazy fast 2 or 3 days. Will recommend
Would recommend: Yes
Was it helpful to you? Yes | No

very good product

by jovelin, from TX, United States Written on March 16, 2024
Very good looking foward to buy another one for a 300 blackout
Would recommend: Yes
Was it helpful to you? Yes | No

best carrier group

by Saskatchninja, from NC, United States Written on December 30, 2022
In use for 300blk. Hands the high pressure very well. The best part about these bolts are the balanced/widened tails they have that give it a smoother and faster reciprocation. The tapered ejector locks well with the barrel and strips the cartridges smoothly. Iv never had an issue with this purchase.
Would recommend: Yes
4 of 4 found the following review helpful.
Was it helpful to you? Yes | No
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