PSA 5.56 Premium Full Auto Bolt Carrier Group

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Palmetto State Armory 5.56 Premium Full Auto Bolt Carrier Group - 8779

In stock

Regular Price: $ 89.99

Special Price $ 69.99

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 www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).

SKU: 8779
UPC: 8779
MFR#: 8779

Features:

  • Milspec Carpenter No. 158® steel bolt
  • Shot Peened Bolt
  • High pressure tested
  • Mag particle inspected
  • Chrome Lined Carrier (AUTO)
  • Chrome Lined Gas Key
  • Gas Key Hardened to USGI Specifications
  • Gas Key Grade 8 Hardened Fasteners
  • Gas Key Staked Per Mil-Spec
  • Tool Steel Extractor
  • Extractor Spring
  • Extractor O-ring Insert
  • SKU 8779

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Made in USA.  Bolt is made of Mil-spec Carpenter 158 steel, Shot peened, High pressure tested and Mag Particle Inspected.   Gas key is machined out of bar stock, chrome lined phosphate coated, and secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is phosphated outside and chrome lined inside.  Laser engraved with the PSA logo.

For packaging considerations, BCG will be packed dry.  As a result, it will have a grey, dusty appearance that will turn  black with the application of CLP or other preferred lubricant.

  • Extractor Spring
  • Black Extractor Insert
  • Mil-Spec O-Ring
SKU: 8779
SKU 8779
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 8779

Questions and Answers

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Browse 62 questions Browse 62 questions and 327 answers
what does this part do? is it the part that folds up?
nite f on Jan 4, 2019
BEST ANSWER: It is the shoulder thing that goes up
If Kavanaugh gets confirmed and I combine this with a 40 or 60 round magazine, will I cause a rift in the space-time continuum?
BillyBadassBgRg on Sep 11, 2018
BEST ANSWER: Yes, but the rift will only occur if you use a 1:7 twist barrel and premium ammunition that exceeds 3000 fps at the muzzle. I may have to recommend at least an 18 inch barrel to ensure velocities that will disrupt the time-space continuum under stated conditions given this formula: f ′ = 2 π ℏ ( E ′ 1 − E ′ 0 ) = f ( 1 − G M R c 2 )
Will this bolt turn my ar into a full auto gun? Or what else would I need to make that happen. New to this and was just curious thanks!
Mckay B on Apr 13, 2018
BEST ANSWER: absolutly. ALSO, I understand that taking out your buffer spring will help your bolt carrier move much faster back and forth. It would also help prove you shouldnt own a gun faster.
Will it make my M4 automatic?
Little Joey on May 27, 2018
BEST ANSWER: Only if you have the shoulder thing that goes up. Also, it may require you to make pew noises to jump start ot.
Looking to replace factory tiger ar556 bcg with a full auto bcg for reliability and fast firing. Will it work?
James H on Apr 14, 2018
BEST ANSWER: Where do you guys come from? Just funny to read some of the questions. You got no business with a MSR.
will this also work with .223 wylde?
edge1916 on Apr 16, 2018
BEST ANSWER: .223 wylde, is a description of a chamber profile...It is not a caliber of ammo....This BCG, will work with.. .223...5.56mm, and .300 blackout ....You do have to have a different barrel, for the .300 blackout.....all the other AR-15 parts will work with all 3....
Can I get this without the logo?
DeanM on Nov 1, 2018
BEST ANSWER: Yes, The part number is 39339.
I'm very new to this but could you tell me if that includes a firing pin?
Michael K. on Jun 5, 2018
BEST ANSWER: Yes, this assembly includes the Firing Pin, the Firing Pin Retaining Pin, the Bolt and the Bolt Cam Pin.
Does each part in this Premium BCG meet or exceed mil. spec.?
jay G on Jun 7, 2018
BEST ANSWER: Much better than "mil. spec. I have bought @5 of these...They are great....
Will this work the same for 300 blackout as well as 556?
Madison B on May 13, 2018
BEST ANSWER: Yes, a 5.56 BCG will work in a .300 (Obviously, use a .300 barrel.) The rest of the AR can use standard 5.56/AR parts. Check out this article on alternative AR calibers:
Check out Pew Pew Tactical's read on "Best Alternative AR-15 Cartridges and Calibers"
Who makes these carriers and bolts? Thanks
Mandrin on Aug 21, 2018
BEST ANSWER: The largely subjective, but widely accepted answer is Toolcraft. PS has brought a lot of companies in to the fold over the last few years. As they are not publicly owned, there is no way to know for sure. That being said, I absolutely do not believe PSA would try and and claim that a bolt was HPT/MPI when they sell so many that aren't. Point being, who makes it is irrelevant so long as it's a quality product.
How does this differ from a standard bolt carrier?
Gavin E on Oct 22, 2018
BEST ANSWER: it doesn't. same thing.
Question Would a fotech echo 2 trigger work with my current bolt carrier or do I need buy this auto bolt carrier?
Mitchell B on Sep 19, 2018
BEST ANSWER: This totally depends on which echo trigger you have, the early version required a special bcg that was notched and the new one just requires a plain fa bcg.
Are these checked for correct headspace ?
Raymond B on Sep 27, 2018
BEST ANSWER: Head Spacing is specific to your barrel and the bolt. You will need to check it with your barrel receiver. Most if not all New Barrels and New Bolts will be fine.
Can this replace just a normal semi auto bolt carrier. I'm getting deep sc
ratches on my round when my carrier slides over the shell in the mag ?
Mike B on Oct 10, 2018
BEST ANSWER: Yes this can replace a "normal semi auto bolt carrier," although I suspect that if you're scratching your brass it may be due to.something else. I recommend you check your mag and mag release to ensure they aren't the issue before you replace the BCG.
Will it work with a semi auto?
Marty on Nov 17, 2018
BEST ANSWER: Absolutely. Being a full auto bcg means it is designed to be strong enough and capable of being used in a fully automatic version also. I've used two of these in separate builds. And, they function flawlessly.
Will this work in an ar15 pistol?
Cody P on Aug 21, 2018
BEST ANSWER: It should work in any standard ar pistol, carbine, and rifle
Will this BCG or a nickel boron bcg work with 7.62 x 39?
Ronald P on Nov 26, 2018
BEST ANSWER: No,this BCG has a Bolt for the 5.56/.223 cartridge. You need a BCG with a bolt for the 7.62 x 39 mm cartridge.
Will this work on a S&W AR15?
jonny on Oct 14, 2018
BEST ANSWER: yes,as long you’re using it for a 5.56 , 223 or 300 blackout ,mine has been working great
Is the bcg work on semi automatic 5.56 ?
Gerry on Sep 26, 2018
BEST ANSWER: Yes. This bcg works for the semi auto 5.56. It works very good.
Is this better or as good as the Nic. Bor. BCG?
Titt. on Oct 15, 2018
BEST ANSWER: the C158 NiB version is easier to clean after use but feature wise, they are nearly identical.
fwiw: PSA offers 3 different NiB bcgs.
Will this work with part number
507819?
Nate L on Dec 7, 2018
BEST ANSWER: Yes it will work perfectly fine. I have 3 of these BCGs and have had no problems with them. They have held up exceptionaly well and have been 100% reliable.
my only question is, does Don Lemon know about this part that turns a evil rifle into a fully auto satin stick??
Jedediah H on Apr 14, 2019
BEST ANSWER: Don lemon has no knowledge about anything best I can tell
Do I need to buy a firing pin for this ?
Brian on Nov 21, 2018
BEST ANSWER: I bought this same bcg this unit is complete you do not need firing pin already has installed. I've put this unit through he'll and back extremely happy hope this helps.
will the bcg work for a 7.62x39 ?
Andrean D on Dec 1, 2018
BEST ANSWER: No, you will have to purchase one that is for that caliber.
Will this BCG work with my AR chambered in 7.62x39?
Michael G on Nov 19, 2018
BEST ANSWER: No it will not case diameter is different
Is this a good upgrade over factory BCG. I understand that you need a different hammer and safety for full auto, I just want semi automatic . Using this full auto BCG should be ok?
Frank B on May 24, 2019
BEST ANSWER: The BCG will work fine on semi auto, it just has the ability to trip the auto sear in a full auto AR . Look at the difference in Google. You only need the hammer and trigger replaced if your doing full auto
Enter
Adding this BCG to a standard AR, will it be necessary to have an adjustable gas block?
Alberto M on Dec 8, 2018
BEST ANSWER: Nope, should work just as any other bcg does. Mine is in a pistol and does just fine
So I have a Aero Precision upper and lower. How well does this bolt work with other manufacturers parts?
Krazee M on Nov 16, 2018
BEST ANSWER: The AR15 is extremely modular. Quality parts from Aero and Palmetto will work perfectly fine together.
whats the difference between a full auto and semi auto bcg. Will this bcg work with either?
Jerry G on Oct 26, 2018
BEST ANSWER: Because this BCG is full auto it is a little heavier than a sporting or light weight BCG. The extra weight gives a slightly longer lock up time. Because it is full auto if you had a legal full auto lower you could use this BCG in that lower and it would be capable of full auto fire in that mode.The bottom rear ( front )of the BCG is not cut out.

Reviews

4.7 / 5.0
871 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
749
68
20
20
14
How can you beat this quality nitrided BCG with Milspec Carpenter 158 Bolt for the price.
June 25, 2019
Purchased
1 month ago
Great Value
Premium quality at an affordable price. Thanks PSA!
June 25, 2019
Purchased
2 months ago
Repeat Customer'
I have bought two lowers, two uppers and two Premium Full Auto Bolts. Not to mention charging handles and other items. PSA is a top quality and trusted business. Do not hesitate! Trust PSA products!
June 24, 2019
Purchased
2 months ago
Qaulity products
This is not the first psa bolt. I have about have one in 762x39 . 6.8 spc. 6.5 grendel and 5.56 . Have been very pleased with the products .
June 23, 2019
Purchased
2 months ago
This is an awesome bcg.
June 23, 2019
Purchased
1 month ago
Works like it should
Fit perfectly ran a 30 round magazine through the gun in a test fire never missed a beat. I’m very pleased. Highly recommend this item.
June 23, 2019
Purchased
1 month ago
Incomplete bolt.
It arrived without an ejector or ejector pin. When I opened package I looked at front of bolt face and only saw the ejector spring. The shipment was a week to get to me as it was so I went and bought a bolt part set for 25.00 to finish the bolt. There was a paper in it claiming it was inspected prior to shipment for quality control and a name on it. They failed in their job. Overall once I completed build I was able to shoot my completed AR pistol.
June 22, 2019
Purchased
2 months ago
Response from Palmetto State Armory
We do apologize for that. Please contact Customer Service so we may resolve this issue.
June 24, 2019
Casey S
I’d buy another
Works just fine. Staked nice.
June 22, 2019
Purchased
2 months ago
Outstanding
Great quality great price
June 21, 2019
Purchased
1 month ago
Needed a spare bolt and this was way better than the bolt in the system already.
June 16, 2019
Purchased
2 months ago