DAILY DEAL Exp. 4/30, 12pm EST
PSA 20" Rifle Length 5.56 NATO 1:7 Freedom Upper with BCG and Charging Handle - 7781740

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PSA 20" Rifle Length 5.56 NATO 1:7 Freedom Upper with BCG and Charging Handle - 7781740


Quick Overview

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SKU: 7781740
UPC: 7781740
MFR#: 7781740

Barrel Length: 20"
Gas System: Rifle Length
Barrel Profile: A2 Style
Barrel Steel: 4150V Chrome Moly Vanadium
Barrel Finish: Nitride
Chrome Lining: None
Muzzle Thread: 1/2-28
Chamber: 5.56 NATO
Twist Rate: 1 in 7"
Barrel Extension: M4
Diameter at Gas Block: .750"
Gas Block Type: F-marked Front Sight Base
Muzzle Device: A2 Style
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA Classic Handguards
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Overall Length: 28"
Weight as Configured: 3.5 lbs

Add To:

Barrel: 20" Chrome moly vanadium steel, chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a rifle length gas system. The A2-style profile barrel is nitride finished for accuracy and durability. Barrel is finished off with an .750" diameter F-marked Front Sight Base, PSA Classic Handguards, and an A2 flash hider.

Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. Featuring machined T marks, and a mil-spec finish. These uppers are made for us right here in the USA by a mil-spec manufacturer.

Bolt: Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is parkerized outside, and chrome lined inside.

SKU: 7781740
SKU 7781740
Brand Palmetto State Armory
Daily Deal Yes
Daily Deal Expires 4/30
Youtube Video No
Free Shipping? Yes
SKU: 7781740

Questions and Answers

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Browse 3 questions Browse 3 questions and 26 answers
Does this have the triangle front hand guard?
Bradley W on Jun 23, 2018
BEST ANSWER: It has round A2 hand guards with a triangular handguard cap
Will the full auto profile bolt work as a semi auto?
Errol on Jul 14, 2018
BEST ANSWER: A full auto BCG can only perform in full auto mode when used in a rifle that has a receiver milled for, and that contains a full auto trigger group. Put a full auto BCG in a semi auto rifle, and it can only function in semi auto mode. There is no danger of using the full auto BCG in a semi auto rifle, and it should be interchangeable with other ar-15 BCGs. Many AR-15 uppers come with a full auto BCG. Hope this helps, Jim
Will the F-marked front sight base work with an A2 upper?
Sean D on Apr 28, 2018
BEST ANSWER: NO... That's the short answer. An F marked FSB is marked "F" because it intended for Flattop uppers. The front sight post shelf is .040" higher than the CORRECT FSB for an A2 upper. You COULD buy a shorter front sight post but without doing that, chances are that you won't be able to sight in your rifle. You should just search around and find a non-F marked FSB.


4.5 / 5.0
48 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Really love this complete upper , and also got the A2 carry handle and A2 complete lower .. But the front sight was just a little canted .. But its not such a big deal .. Overall good product ...
August 20, 2018
1 month ago
Great upper, finish is a little rough would give 4.5
August 15, 2018
1 month ago
Good so far
Great so far. Did have a little problem with the non-palmetto carry handle. Had to crank the sight almost all the way to the left to get a good zero. I did not have this problem with another rifle, so I will check again. Still functions well, finish is great and groups were tight. Not a single malf yet, but still under 500 rounds.
August 15, 2018
1 month ago
Great upper
No problems wit PSA build installed on Anderson lower have shot around 100 rounds with no FTF or FTE accuracy seems good with open sights.
August 11, 2018
1 month ago
Well built
I just haven’t had enough time with it to say for sure how accurate it is or isn’t. So far it has been reliable 100% though. Accuracy tests will continue
July 24, 2018
1 month ago
Seems good to me!
Haven't shot it much, but so far it seems fine!
July 21, 2018
2 months ago
Amazing quality and a great price!
Great addition to my collection
Great quality at an amazing price... Made for a nice classic throw back build!
Great quality at an amazing price... Made for a nice classic throw back build!
June 27, 2018
3 months ago
Function and accuracy is great right out of the box
June 23, 2018
4 months ago
terrible accuracy
I have bought many barrels from PSA: 556 CHF, premium, freedom, nitride, 308 SS, AR-47, AAC etc, and all were great before this last one. This last one is terrible, with what I expect are stress issues from the treating process. Barely keeps the shots on paper at 100, let alone anything resembling a group. I believe this is just a defective outlier of a barrel, and PSA has it right now while I wait for the replacement. I fully expect the replacement barrel/upper assy to be a good one so I can update this review.
June 6, 2018
3 months ago
20" rifle length NATO Freedom Upper
Fast shipping and very accurate shooting straight out of the box.
May 30, 2018
3 months ago

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