Description

AO Precision Premium Nitride Bolt Carrier Group - HPT/MPI These premium 9310 Bolt carrier groups are manufactured by AO Precision to the highest standards of top tier manufacturers within the industry. AO makes these HPT / MPI BCG's for other Military contractor juggernauts, such as FN America. All bolts are rigorously inspected and are individually High Pressure Tested and then go through a Magnetic Particle Inspection. Mil Spec BoltEnhanced 9310 Steel Shot PeenedHigh Pressure Tested (HPT)Magnetic Particle Inspected (MPI)Mil Spec Carrier8620 Aircraft Grade SteelFull Mass M-16Mil Spec Extractor4140 Steel per ASTM A108, cold drawn and stress relieved BHN 187-22Black Nitride FinishExtractor SpringBlack Extractor InsertViton O-RingMil Spec Gas Key4130 Profile Extruded SteelGrade 8 HardwareProperly StakedNitride InteriorPlease note: These BCG's are considered premium because of the materials used and the Military Spec requirements that are adhered to during the manufacturing process. The HPT/metallurgy equipment and processes that these go through are very hard to find and very expensive. These are battle proven (literally), but they may not be as pretty as other BCG's out there.We will personally handle any potential warranty claims. Please reach out to RTB if you have any issues or concerns
MPN#: AOM16-HPT-MPI-SBN

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1776
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Comments (16)

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Not the price advertised. 126 after the 1776 code.

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I bought 3 of the phosphate and all are MIL as stated, functional and staked properly. NO RAGRETS. Got that sweet whistle headed into battery. Looks like AO just doesn't have the nitriding down or are outsourcing to a less than stellar sun tier.

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Good update. It sounds like the extra $10 for the phosphate 158 Carpenter model, is a way to avoid a bunch of disappointment, and hassle. https://www.righttobear.com/AO-Precision-Phosphate-Bolt-Carrier-Group-15...

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I bought three of these bcgs. Not a slick finish - seems rough. Firing pin ret pin very tight. Firing pins have non-uniform appearance, one is tarnished/has corrosion(rust?). Will try out once ready for range. Disappointed at this “”PREMIUM”” pproduct

Will try once

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RTB honorably refunded the price of the three bcg’s. They did not return the $26.- that I am out for return of these defective products. No further orders from me.

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Now that I installed it into my upper, when the BCG goes back-and-forth there’s a very loud squeal which I attribute to some milling cuts along the top of the bolt in the area of the GAS KEY. NOT GOOD. gas key on both sides.

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Here is a little bolt carrier 101. What you called mill cuts are actually the upper rails. There are two of them, one each side of the gas key. There are also two lower rails. These four rails are the only points of contact between the carrier, and the upper receiver. The gas key, and the gas key channel in the charging handle serve as a guide during cycling. Bottom line, you spent around $400 for three shitty BCGs. You need to contact RTB last week.

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My son bought one and it is poorly finished, doesn't want to go into battery sometimes because it's so rough, better choices than this.

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Same here bad finish

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I suggest you contact RTB, and request they resolve your problem. If that fails, contact AO Precision.

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I have the same problems...I ordered 2 and has very bad finish on them...I contacted AO and they said to contact Right to bear...I am still waiting on a response back.

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I'm hopeful RTB will resolve your problem. They do have a good history of customer service. Better quality control at AO Precision could have prevented this hassle. Keep us informed on what happens.

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The surface finish of these carriers is very rough, and sounds like an old school rapper scratching records when you cycle the firearm

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No one wants to purchase your buyer's remorse. This is gun.deals, not advertiseyourarmslistadhere.com

5 votes
1 vote
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