PSA AR-15/5.56 Nickel Boron Bolt Carrier Group - 7791928

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PSA AR-15/5.56 Nickel Boron Bolt Carrier Group - 7791928


Quick Overview

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SKU: 7791928
UPC: 7791928
MFR#: 7791928

Weight: 11.65 oz
Caliber: .223/5.56
Finish: Nickel Boron
Bolt Steel: 9310 Steel

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This 5.56mm Bolt Carrier Group is Nickel Boron coated and features a 9310 shot peened bolt.  The bolt is magnetic partical inspected but is not marked.  The gas key is hardened and secured with Grade 8 fasteners, and is staked per Mil-Spec.

SKU: 7791928
SKU 7791928
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
SKU: 7791928

Questions and Answers

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Browse 20 questions Browse 20 questions and 86 answers
I bought this BCG previously and I had to take it to be staked at a local gunsmith. Are the BCGs visually inspected for light staking before shipping?
Skips on May 7, 2018
BEST ANSWER: If you cannot handle staking a bolt yourself, i don’t think you should have an ar.
Is the bolt Chrome plated and is the internal side of the carrier plated Chrome plated????
Is it high pressure tested??
What material is the firing pin made from??
Ronnie G on Apr 12, 2018
BEST ANSWER: Not chrome! Nickel. And they are the only way to go. I use several in long range 800 yd ARs and they never fail. Always keep clean and lubricated and they will last longer than you will!
WHEN will you have the nickel boron bcg back in stock?
Carlos B on Apr 21, 2018
Is this NiB BCG "M16 cut & full auto rated"?
Larry M on Apr 12, 2018
BEST ANSWER: It is a full auto profile. That's all PSA sells.
Is this HPT?
WWIII on Apr 12, 2018
BEST ANSWER: .........Palmetto: "pretty sure they are HPT" is not a good answer. You can verify if it is HPT or not....."pretty sure" doesn't cut it....
Is this BCG full auto rated?
Larry M on Apr 12, 2018
BEST ANSWER: Yes the carrier is milled as a M16 style so it will work on full auto if you have proper tax stamps and auto FCG.
When do you anticipate these be back in stock?
Tank T on May 29, 2018
BEST ANSWER: who cares?
Will the 556 bolt also work with the 300 bo?
Jayman on May 7, 2018
BEST ANSWER: Well yes it will. The 300BO is a cut down and necked 556 case to accept a 308 projectile.
Does this have the PSA logo? Pics dont show one so i just want to confirm.
Chris N on Jun 16, 2018
BEST ANSWER: I purchased 4 NB BCGs. The NB BCGs I received did not have PSA logos.
Can the nib bcg be polished?
Jay K on Jul 6, 2018
BEST ANSWER: As delivered they are smooth as butter, and just about too shiny. So far they have been very easy to clean with no visible staining. We have run one over 1k rounds on a suppressed AR, still cleans up very well
What is the difference between this one and SKU 516445123?
Sean F on May 22, 2018
BEST ANSWER: i just looked at the the other sku numbers and compared them i really did not see a difference between the sku numbers there really the same bolt carrier. the only thing i can think of is there were ran on different dates or ran on different job numbers so there made them under different sku numbers for dates and/ or job numbers
I know bolt is 9310 steel, what type of steel is the bolt carrier?
Kevin on Aug 8, 2018
BEST ANSWER: standard 8620.
Will this BCG work with a Wylde barrel?
Gary T on Sep 14, 2018
BEST ANSWER: Yes it will function fine.
If this BCG is used in any AR in the appropriate caliber should the "Head Spacing" be checked?
Mike R on Sep 15, 2018
BEST ANSWER: only if you are using this BCG on a new upper build but if u are just replacing with another then you dont have to.
Maia ask what type of nickel boron coating You use and what is the difference between The psa nickel boron and the freedom nickel boron and premium nickel boron?????
Patrick T on May 31, 2018
BEST ANSWER: I believe that question is more for Palmetto State Armory to answer if I had an answer morning happy to tell youEnter an answer to this question.
Can this BCG be used in a .224 Valkyrie upper without any hitches? Thanks!
lonestar on May 9, 2018
BEST ANSWER: To answer your question no. The bolt itself needs to be for a 6.8 spc. so the bolt face wouldnt work. Everything else would function great if ur willing to switch bolts.
want to replace bcg on s&w mp15 tactical with this is this correct part?
doug s on Sep 14, 2018
Smooth as butter
Does this BCG have an O-ring like most others?
StevieD on Sep 13, 2018
BEST ANSWER: O ring where? No O ring under the extractor lever if that's what you mean.
What is the difference between this BCG and the BCG premium?
Ron L on Jun 8, 2018
BEST ANSWER: I have purchased several of each from psa and the only difference I this one is it’s nickel boron coated, I’ve seen some say there MPI but I’ve seen no such marlings on the bcgs
Would this be a good upgrade for my stock SIG M400? (new guy)
Christopher W on Sep 1, 2018
BEST ANSWER: It would be a good upgrade for practically any AR15, including your Sig M400. These are great bcg. But I own a Sig M400 and it is good to go as-is. Your call.


4.9 / 5.0
253 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I run it hot hot hot
If you have never tried nickel Boron, this is your chance at half price. I have almost 4000rds on mine. Never cleaned, just a little CLP. I fire 3 thirty round mags back to back and plastic instantly sticks to the SS barrel. That’s how hard I’ve used this AR all from PSA.
November 14, 2018
2 months ago
Excellent finish
Work perfectly, and for the price you can't go wrong
November 14, 2018
2 months ago
Perfect part for a great build
I love this! Smooth operation, minimal but easy cleaning, and it looks great in my rifle 😉!
November 14, 2018
2 months ago
Looks Great! Functions Flawlessly!!
I bought this to complete a build that I decided to go full polished and anodized on. As usual with PSA products it functions perfectly and looks great in my pistol. I highly recommend you purchase this BCG for your next build.
November 14, 2018
2 months ago
Well made. Looks enough like chrome to use in a retro build.
November 14, 2018
2 months ago
Great value on a great BCG
Never had any problems with any PSA BCG. These NiB ones appear to continue that great reputation. Coating appears smooth and uniform. BCG slides into uppers easily. I anticipate many years of easy-cleaning service from these.
November 14, 2018
2 months ago
Very Slick
Lube my AR with LSA and there is little friction.
November 14, 2018
2 months ago
quality BCG
Best price ever, my favorite for a AR build.
November 14, 2018
2 months ago
can't beat it, will not more
can't beat if for the money.. nice finish, no issues around 500 rounds.. will buy more
November 13, 2018
2 months ago
Really nice bolt carrier group
Great bolt carrier group at a fantastic price.
November 13, 2018
2 months ago

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