American Defense Premium M16 Bolt Carrier Group - Nitride Finish

13 Reviews

Out of Stock



The American Defense premium bolt carrier group was built from the ground up to the finest available. Every single component assembly was critically assessed and processed per the latest technical data packages. Unlike most manufacturers, every component received a finish pass for optimal finish, with grinding done post heat treat without shortcuts. Even the salt bath nitride finish was carefully selected from half a dozen facilities to ensure the glassy smooth function you'd expect. Properly staked, shot peened, and heat treated. Get your American Defense BCG today!

  • M16 cut 8620 tool steel carrier
  • 9310 super alloy steel bolt assembly
  • 4340 tool steel gas key, cam pin, and extractor
  • High pressure tested and magnetic particle inspected to protect against material defect
  • Grade 8 hardened fasteners
  • Properly staked gas key
  • Slick salt bath nitride finish
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Bolt FinishSalt Bath Nitride
Bolt Material9310 Steel
BrandAmerican Defense
Caliber Gauge5.56 NATO
Carrier FinishSalt Bath Nitride
Carrier Material8620 Carpenter Steel
Carrier StyleM16 Bolt Carrier
High Pressure TestedHigh Pressure Tested
Magnetic Particle InspectMagnetic Particle Inspected
Manufacturer.American Defense
Weight11.4 Oz

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

13 reviews


Excellent quality for the money


Bought for a ghost firearms pistol build. Extremely happy with the quality and finish. Cleans up twice as easy as a phosphate bcg. Ran flawlessly in a new pistol build. Couldn't be happier thanks P/A for so many choices

Works like it should.


As advertised smooth finish. Easy to clean.

Don t think twice, BUY IT!

by -

This bcg is PREMIUM. Very slick finish. Dirt wipes right off. Worked flawlessly at the range today in my AR pistol. I plan on getting more for all my rifles. Very happy with my purchase and the service from Primary Arms. TOP NOTCH!

Great Product, Great Value, Highly Recommended

by -

Absolutely flawless. Great value, easy to clean, runs perfect.
<br>I purchased this while it was on sale so I am sure to buy more once it comes back on sale.

Premium M16 BCG that happens to be a great value

by -

I've had so many AR's through the years and every one of them with phosphate BCGs. With two of my latest ARs I wanted to upgrade the BCG, so I ordered one of these ADM nitride finish groups - I was blown away how nice it was. So, I ordered another! Runs smooth/slick in the action and is super easy to clean - doesn't get as dirty as the GI phosphate finishes. Get one!

Exactly what one would expect from American Defense Mfg.

by -

Top notch BCG nitride is uniform, the gas key is properly staked and it has preformed flawlessly in my 300 Blackout pistol. I'm satisfied with this BCG and would recommend this one to anyone. Paying the few extra dollars for a nitride BCG is more than with it on the cleaning end of the equation. MP marked but it isn't HP marked however it is supposed to have been according to their specs. Either way the MP is the only test I'm concerned with.

Super solid, high end BCG at an excellent price...

by -

Rock solid BCG. ADM doesn’t mess around. Everything they make is high quality and this bit is no exception. Machining and finishing are top-notch. Functions flawlessly and easily wipes clean. This is my second from them and it won’t be my last. Git yoo wun, foo’!

Out of spec gas key

by -

Gas key out of spec. Inside diameter of gas key does not allow the gas tube to fit inside, negatory. Tried multiple gas tubes and inserted multiple known good assembled rifles, no go - will not go into battery on any. I am disappointed in AD for sending this out, should have been easily caught at QC if it was checked. I am waiting for my RMA from PA and am confident they will take care of this as they always do. I will give AD another chance and have this replaced with same model as all the other machining and finish on bolt and carrier looked really good. Will update once I receive the replacement.

Mishaped gas key...

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BCG seems like a great item. Great finish, etc.
<br>Unable to use this BCG as the gas key came out of spec and slightly smashed within it's own packaging. A mil spec gas tube will not fit inside of it.
<br>From PA: We're sorry that you received a bad one and we'd be happy to swap it out for you.

very minimal gas key staking

by -

I assumed everything ADM made was perfect. The gas key staking was VERY minimal. I contacted ADM directly and they said that after looking at the picture it was acceptable but they would exchange it if i wanted. They sent me a pic of one from their inventory that was only slightly better.<br><br>It was nice that they offered. I'll be returning this one to PA and getting something else.