Improve your rifles function to ensure optimal performance by installing this FailZero AR10 .308 Bolt Carrier Group BCG. All essential parts of these Bolt Carrier Groups by FailZero are coated with EXO nickel boron that provides a permanent dry lubricity while increasing durability as well as their resistance to corrosion and wear over time. Plus, this coating reduces friction to enhance the overall performance of your weapon. The FailZero AR10 .308 Assembled Bolt Carrier Group BCG is a ready-to-install drop-in part that quickly and easily fits into your firearm. Pick up the FailZero AR10 .308 Bolt Carrier Group BCG w/ No Hammer today to greatly improve you firearm’s function to deliver your best shots yet. Specifications for FailZero AR10 .308 Bolt Carrier Group (BCG): Manufacturer: FailZero Finish: Nickel Boron Fabric/Material: 9310 Steel Cartridge: .308 Winchester Gun Make: AR Platform Gun Model: AR-15 Condition: New Bolt Material: 9310 Steel Carrier Material: 8620 Steel Caliber: .308 Caliber Coating: EXO Nickel Boron Features of FailZero AR10 .308 Bolt Carrier Group BCG .308 Compatible DPMS Pattern and 6.5 Creedmoor Compatible Magnetic Particle Inspected Live Fire Tested Package Contents: FailZero AR10 .308 Bolt Carrier Group Bolt and Extractor Bolt Carrier Extractor Cam Pin Carrier Key Firing Pin
Bryan Aguilar –
Had this bcg for over a year and it's been great. The bolt head spaced perfect on a budget 308 upper/ barrel and just upgraded the barrel to a Faxon barrel and still head spaced great. The rear contacts the buffer as it should yet many others don't. And to top it off the coating fail zero uses is sooo soooo soooooo easy to clean and lube.
Dave –
After careful consideration, I chose this BCG because of the company's commitment to quality. I ALWAYS purchase Made In USA whenever possible for all obvious reasons. The Nickle Boron coating is PERFECT! I could not be happier with my purchase.
Kit –
I've put well over 1000 rds through this bcg. The 10 is a maintenance-after-every-use platform.The only issues I encountered where a bent retaining pin due to build up in the breach. Some sub-par, low cost, alternative, steel cased and likely manufactured in you-know where under you know whos administration, ammo and excess residue made for a sticky extraction thus bending the retaining pin. I made the exchange from cotter pin to machined pins and even bent a few of those! that and as to be expected crack forming on the extraction claw after the first 500 or so rounds. These rifles are no-doubt precision and a muzzle brake for the sake of your optics will reduce additional stress. 1500+ rds and nothing other than the afore mentioned.
T-Mac –
I have been building Ar's for sometime, mainly Ar-15 and was looking to start my Ar-10 I have always wanted. Well I needed a perfect BCG (bolt carrier group) and I found it. This bad boy here will take all you can give it with out hesitation. The more you give the better it gets. The name is dead on "FailZero" no others words really to describe it. Perfect lines, expert machining and easy to take apart and clean. As we all know that's the fun part, but this makes it easy to know all residue is removed and ready to punish anything you throw at it. if you want the best, this is it.
KP –
Put this in an Aero M5 build a few months ago. With the lockdown, I was just able to get it out to the range July 6. The Aero was all Aero, except for this bolt, paired with a Strike Industries charging handle. I had nothing but issues. Literally every round was jamming up. Brought it home, and disassembled the gas system to see if there was a gas issue, nothing found. Checked out all the magazines, no issues. Went back to the range on July 11 and loaded single rounds in my mags. Turns out, it was the extractor. It just wasn't working, at all, 100% of the time. The empty round would barely come out of the chamber and would just sit in the open chamber above the magazine. The Range Officer helped me verify it by watching me fire, just ZERO extraction. Turns out that the extractor spring that is in this POS is underpowered. I called Fail100 when I got home, and left a message. Understand they were likely off on the weekend. Monday and Tuesday went by, and no return call. Called and left another message today. In the mean time, I ordered a Sprinco double extractor spring set after my initial call on Saturday. It came today (tuesday) and I installed it. It is much stiffer now, and I hope it stands up to the 308 round and provides me with the reliability of feeding that I am looking for. For the money I paid for this bolt, I would expect a better extractor spring that could hold up to the round it was supposedly designed for. After this experience, I regret not going with the cheaper, more reliable Aero bolt. I will not buy another Fail100 product if this is the way they skimp on costs and ignore their customers calling them for support. On top of the $225 I paid for this bolt, I spent another $10 for an upgraded spring, when I could have gotten the Aero for $50 cheaper and not had to spend the extra 10. So I paid $60 extra for a cool logo, and two wasted range trips. Shame on you FailZero.
Jake –
First off, love Fail Zero BCGs. I will continue to purchase Fail Zero prducts for 556 or 300 systems, but I will never purchase another Fail Zero for a 6.5 Creedmoor. The 6.5 is such a high pressure round, that standard 308 BCGs are unable to contain the pressure and the firing pins are too long. On my second round, the firing pin pushed through the primer, which blew the primer into the BCG, completely destroying the firing pin. The bolt assembly locked into the star receiver of the barrel. After about a dozen kickstarts, I was able to dislodge the bolt. I have since removed the bolt assembly and replaced it with a JP Enterprises high pressure bolt assembly, which costs as much as the Fail Zero BCG. I was lucky that it did not damage my carbon fiber barrel, but that's not always the case. Beware if you're running a 6.5, especially with a match barrel.