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

In stock

Special Price $ 279.99

Regular Price: $ 459.99

Quick Overview

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: 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

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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
Department Uppers
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Unit Price No
Youtube Video No
Free Shipping? No
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 7781740

Questions and Answers

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Browse 6 questions Browse 6 questions and 30 answers
Will rifle length upper work with a carbine lower gas system?
Jim M on May 21, 2019
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: Yes absolutely.
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.
Does PSA make this 20” upper in 308?
John P on Jun 5, 2019
BEST ANSWER: i wouldnt order it if they do. still never sent parts and wont answer emails from 2 years ago. customer service is a joke
Can this be used with an AR pistol lower?
Marty L on Aug 21, 2019
BEST ANSWER: if it could or not i would buy it elsewhere thry have the worst customer service ive ever seen. still havent received A2 butt stock going on 2 years now


4.7 / 5.0
62 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Made for a fun Project
I used this upper in an M16A4 clone that I built over the weekend. Was a lot of fun and I do think it turned out nicely. Took it to the range this morning and shot a 3 shot group at 25 yards using 62 grain Federal M855 green tips in a group under the size of a quarter. I know it can do better. It's not too heavy, and it's perfect for the "palm-up" grip which it was originally intended for. I bought the Knights Armament Co. M5 RAS battle rail on ebay separately used and it fit right on. Mine did come with a cracked charging handle but who uses the stock charging handles to begin with? This was relatively minor considering that I bought both the upper and lower here on PSA for less than $500. ($479 out the door with everything).
It's the best shooting rifle I have, and it didn't even reach the 50% point that I paid for my Core 15 M4. I love this rifle and because of the quality of the product that I received, I will forever be a fan of PSA for all my future builds.

PSA! - Stock more product!
User submitted image
User submitted image
August 6, 2019
1 month ago
purchased this for an M16A4 clone build
Used to complete an M16A4 clone build I'd been slowly working on for a while now. Shipping was quick to my house. Upper looks good (finish matches my CMMG lower) and while I hemmed & hawed over weather or not to get the chrome lined barrel & chamber, I'm very happy with what I got. First time out, I shot a 5 round group of 55 grn FMJ at 25 meters using irons that could be covered with a quarter. I know the rifle can easily do better.
August 5, 2019
2 months ago
Consistent Shooter!
Accurate and well made! You will not be disappointed and Palmetto State is gaining a great reputation for their products!
August 2, 2019
1 year ago
consistent PSA quality
This is my fourth rifle purchase from PSA. The quality is always consistent. No issues at all.
June 6, 2019
4 months ago
Performed flawlessly out of the box.
February 1, 2019
8 months ago
great rifle
what a great full length the oval handguards...great price....
January 31, 2019
8 months ago
Buy it
I have since put a different upper on mine, but it never fails to work.
January 9, 2019
1 year ago
Great upper reciever.
I paired this up with the 504399 lower, both parts fit together perfectly, and I was really impressed with the accuracy of the rifle. Zero malfunctions.
User submitted image
Added Jan 2, 2019
January 2, 2019
M16a4 clone essential
Perfect upper to complete a close copy of the M16a4
November 4, 2018
1 year ago
.Excellent in all respects-(quality,service,price,even packing).as all of my purchases have been.
Excellent in all respects(quality,service,price,even packing) as all my transactions have been.Can't be a better dealer to do business with. Craig R -VA.
September 23, 2018
1 year ago

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