AR-15 upper nitride bolt carrier group

More Views

PSA Freedom AR-15 Nitride Bolt Carrier Group With Carpenter 158 Bolt - 516446915


Quick Overview

free shipping Free Shipping applies to this item only and not the entire order.

WARNING: This product can expose you to the chemical lead, which is known to the State of California to cause cancer and reproductive harm. For more information go to (CA Health and Safety Code Section 25249.6).

SKU: 516446915
UPC: 516446915
MFR#: 516446450

Caliber: 5.56/.223
Bolt Finish: Nitride
Bolt Steel: Carpenter No. 158 Steel
Profile: Full Auto Profile
Gas Key: Grade 8 Hardened Fasteners, Staked per MilSpec

Bolt is Magnetic Particle Inspected (MPI)

Add To:

The PSA Freedom Nitride BCG is made with a carpenter 158 bolt with a full-auto profile, designed to be used in AR-15 & M-16 style rifles.  Bolt is magnetic particle inspected for a uniform quality and operational reliability.  

SKU: 516446915
SKU 516446915
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Unit Price N/A
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 516446915

Questions and Answers

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 9 questions Browse 9 questions and 33 answers
Can you polish this bolt? I'm getting a short stroke and will not cycle my rounds. Most jam or do not eject. I'm going to polish my trigger as well. Just built the gun and would not fire correctly.
Jason M on Dec 16, 2018
BEST ANSWER: I would never polish a bolt, as the nitriding is very hard and very thin. I would also not polish a trigger unless you know what you are doing, there are too many good triggers on the market. I would check the magazine first, then the ammo and finally I would swap out the bolt with another to see if your gas system is the problem. Check that your gas block is correctly aligned with the gas port.
Can this still be ordered in California now that we are in 2019, do i still have time until june?
David B on Jan 22, 2019
Does this BCG come without a logo like the one in the image?
Michael on Jan 29, 2019
BEST ANSWER: It does not have a logo.
Since this is a nitrided BCG, does it require crome linning inside carrier and gas key?
Hammer on Jan 26, 2019
BEST ANSWER: No, you cannot chrome line a nitrided part.
Is this bolt carrier group made in USA?
Jeremy G on May 12, 2018
BEST ANSWER: Yes, all PSA products are manufactured in the USA.
Can this BCG be shipped to California?
Filemon M on May 11, 2018
BEST ANSWER: Yes in 2018 but no in 2019. The communist government are passing a law where no gun parts can be ordered on line. Only in state , face to face after s background check.
Is it MPI stamped / marked?
Oscar L on Jul 24, 2018
BEST ANSWER: The Bolt I received was stamped MPI on the shaft of the Bolt , Now I do have some with the Logo and without ,Some are stamped and some are not , To Me that does not effect the quality or function of the Part
Is this a mil spec bolt?
Ronald H on Jul 19, 2018
BEST ANSWER: Yes, Mil spec all the way including M16 profile carrier, properly staked gas key, firing pin and metal formula. I have several of these in service or as spare parts and they all work great especially for the price when they are on sale.
My bolt Yesterday?
Robert T S on Jun 9, 2019
BEST ANSWER: Saturday went shooting and my bolt broke I have about 1500 rounds With it. Had no issues with it Until Saturday I bought it in July 2018


4.8 / 5.0
56 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Excellent quality will recommend for future purchases.
July 16, 2019
2 months ago
Freedom nitride carrier with 158 bolt
Great bolt group for the price, staking hold tight after 500 rounds, really good quality for the price
June 17, 2019
2 months ago
Saturday went shooting and my bolt broke I have about 1500 rounds With it. Had no issues with it Until Saturday I bought it in July 2018
June 10, 2019
11 months ago
Response from Palmetto State Armory
We do apologize for that. Please contact Customer Service so we may resolve this issue.
June 11, 2019
Casey S
Good product!
Good price for good product.
June 8, 2019
2 months ago
Bolt Carrier from PSA!
I have gotten nothing but quality parts & Build kits from Palmetto! all of my AR Builds are Palmetto State & I now have 8 PSA Builds 3 PSA kits in storage for later builds & I own 4 other AR's like 2 Ruger AR 556 & a S&W MP 15 & a ATI Omni Maxx & my PSA AR's are just as good if not better than my Rugers & S&W MP 15 & the ATI is just a low budget AR I bought just to see how it does compared to my other AR's!
May 26, 2019
1 month ago
Good quality. Expecting it to last.
Works like it should. I haven't really put it through its paces yet, but the future will tell.
May 18, 2019
4 months ago
Gas key not staked properly, otherwise seems nicely finished.
The gas key is not staked properly. Took me about 15 seconds to notice it after I pulled it from the tube.

My unit is qualifying the rest of the week. It ought have 3k rounds on it by Sunday. See how it holds up to f/a use.
User submitted image
User submitted image
Poorly staked gas key
April 9, 2019
It works , great price
MPI tested. Works very well so far
April 8, 2019
5 months ago
Excellent value
Well manufactured and finished, for an excellent price.
April 3, 2019
Works perfectly. Great value for a build!
March 23, 2019
1 year ago

Customers Who Viewed This Item Also Viewed