Q&A for Sharps Rifle Company 308 Xtreme Performance Bolt XPB Carrier Group (BCG) with Dual Ejectors — 12 Questions & 12 Answers

The Sharps Rifle Company 308 Xtreme Performance Bolt XPB Carrier Group works with DPMS Gen 1 pattern rifles. PSA does not state if the PA10 Gen 3 is DPMS Gen 1 or 2, I recommend contacting PSA to confirm compatibility.

The Sharps Rifle Company XPB 308 Balanced Bolt Carrier Group is for AR10's and will not work in an Smith and Wesson M&P15 Sport 2.

Compatibility between AR10 parts can be tricky because there isn't necessarily a set standard like AR15's. Please email us at techsales@opticsplanet.com so we can get some more information from you regarding the issues you are having.

The Sharps Rifle Co. XPB 308 Balanced Bolt Carrier Group is 17.7 oz.

The Sharps 308 BCG is compatible with the DPMS gen 1, LR 308, SR 25
As long as your upper, lower and or components are the same as the above it will work.
My advice is that you contact the manufacturer of the said components to verify that they are compatible with the DPMS gen 1 , LR 308, SR 25.
Sharps cannot advise on parts that we do not manufacture, your best remedy is to contact the manufacturer that actually makes and manufactures the parts that you are utilizing in conjunction with our bolt carrier group.

It should be noted :The ArmaLite rifle (AR 10) is not compatible with the DPMS gen 1, LR 308,SR 25

In reality there is no mill spec 308 firing pin as the 308 platforms were never adopted as a common battle rifle by the military, being utilized for special applications Only, manufacturing blueprint specifications which varies depending on the manufacturer.
That being said the DPMS gen 1, is roughly 90% + of the platforms on the market.
The original DPMS 308 platform had a .080 firing pin nose,aftermarket bolt carrier group‘s for the 308 Cartridge Family ,now have much smaller firing pin noses and corresponding bolt face orifices, Due to some of the higher pressures on the firing pin nose and bolt face. I.e. 6.5 Creedmoor and similar cartridges.
Our firing pin nose is .068 will work fine for the 6.5 Creedmore and similar cartridges

It should be noted :The ArmaLite rifle (AR 10) is not compatible with the DPMS gen 1, LR 308,SR 25

No. The Sharps Rifle Co. XPB 308 Balanced Bolt Carrier Group is only compatible with Generation 1 DPMS LR-308 style platforms.

The Sharps Rifle Co. XPB 308 Balanced Bolt Carrier Group is compatible with Generation 1 DPMS LR-308 style platforms. This is NOT compatible with Generation 2 DPMS or Armalite platforms.

According to the Sharps website, this bolt will NOT work with a DPMS Gen II upper. Here is a quote from their website:

“Sharps 308 BCG is compatible with Generation 1 DPMS LR-308 style platforms. Weight 17.7 oz. This is NOT compatible with Generation 2 DPMS LR-308.”