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

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


Quick Overview

SKU: 8779
UPC: 8779
MFR#: 8779


  • 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
SKU: 8779

Questions and Answers

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Browse 3 questions Browse 3 questions and 3 answers
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: yes this will fully semi automatic with 30 caliber magazine clip in half a second
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: It will likely work, but there will be no difference in rate of fire. This is for legal use only.
will this also work with .223 wylde?
edge1916 on Apr 16, 2018


4.4 / 5.0
132 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Came in a nice hard cardboard tube. Stamped both mpi and hpt. Ive heard these are made by FN. So far approximately 7000 rounds amd still going. Normal wear marks and have replaced the gas rings twice. Gas key staked very well and the chrome looks good. I got this when on sale for 69$and its just as good as both my bcm and toolcraft bcgs.
December 9, 2017
The price is fantastic and the material itself appears to be well made however I have been having issues with it cycling. The bolt seems to lock up and I am unable to pull it back without dissembling the upper from the lower receiver. One friend thought the gas rings may be too lose causing excessive friction while another thought the tolerances were too tight. Safe to say I am disappointed in this BCG because it does not function correctly. Gun smith here I come...
September 11, 2017
Fit and finish excellent!
I bought last week on sale 69.99 free shipping how can you go wrong at this price for a full auto bolt very impressed with quality and packaging I have yet to install or test fire I'm sure based on reviews it will run flawlessly I will mate it to my Anderson lower and the psa upper wich I plan to order soon thank you psa for a great product!!
September 11, 2017
It even has the PSA logo on it for once!
This BCG is perfect for anyone that is starting out and is willing to CLEAN there rifle after every shoot. If you are NOT going to CLEAN your rifle after you shoot. spend the extra money and get one of the higher grade finished BCGs

I purchased this as the combo deal BCG & Charging handle.

I have a half dozen orders with 20 plus items from PSA. Two snags to date But well worth the savings!
Customer Service is acceptably OK! It can take a few days to get a reply some times.
(There staff go to appointments and take vacations just like the rest of us!)
June 2, 2017
Low quality replacing immediatly
Bolt locks into rearward "locked" position in carrier when not in battery and refuses to move causes failures to feed eject etc. Very unsatisfied with this low quality product. If this is the "Premium" product I would hate to see what the regular bolt carrier group is like.
May 29, 2017
Good price-free ship-works great
I just received my PSA BCG (8779) yesterday. I did a complete cleaning as per instructions. I had it apart so I applied FrogLube. I apply FrogLube to all my guns. Try it you will like it. Tested the headspace with a go gauge in a PSA upper. All was good test shot today-worked as expected. Happy with both items.
May 18, 2017
Had a lot of issues with extraction with the bolt that came in my rifle (Not PSA) had a lot of catastrophic failures on the range... I wasn't betting my life on my rifle I tried different types of ammo nothing new extractor pieces got me to about 70% reliability. SWAPPED THAT BOLT FOR THE PSA PREMIUM BCG AND IT FUNCTIONED FLAWLESS. Thank you PSA this product has made me confident with my rifle and your BCG ate any type of rounds that i put through it like a monster. I am 110% satisfied with it.
April 8, 2017
This will be my 3rd.
Functions perfectly.
March 29, 2017
Very nice
Ordered on Friday morning it was delivered the following Tuesday. Finish is great. I can't wait to get my dissapator upper to run it in.
March 24, 2017
Good Product
Palmetto State Armory sells good products at good prices but their customer service is awful and if you make any mistakes in the ordering process they will make you pay dearly.
March 9, 2017

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