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PSA 18" Rifle-Length .223 Wylde 1/7 Stainless Steel 15" Lightweight M-Lok Upper with MBUS Sight Set, BCG, & CH - 5165448415

In stock

Special Price $ 319.99

Regular Price: $ 609.99

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

SKU: 5165448415
UPC: 5165448415
MFR#: 5165448415

Barrel Length: 18"
Gas System: Rifle-length
Barrel Profile: A2 Style
Barrel Steel: 416R Stainless Steel
Barrel Finish: Stainless
Chrome Lining: None
Muzzle Thread: 1/2-28
Chamber: 223 Wylde
Twist Rate: 1:7
Barrel Extension: M4
Diameter at Gas Block: .750
Gas Block Type: Low profile
Muzzle Device: A2 Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA 15" M-Lok Lightweight Rail 
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Sights: Magpul MBUS Sight Set, Black
Overall Length: 26.5"

Add To:

Barrel: 416R stainless steel barrel.  Chambered in 223 Wylde, with a 1:7 twist rate, M4 barrel extension, and a rifle-length gas system. Barrel is finished off with a PSA 15" Lightweight M-Lok free float rail, .750" low-profile gas block, and an A2-style flash hider.

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

BoltFull-auto profile bolt carrier group. Milspec Carpenter No. 158® steel bolt, Shot Peened, High pressure tested, Mag particle inspected, Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked per Mil-Spec.  8620 steel M-16 profile carrier is chrome lined and phosphate coated.

Included:  Magpul MBUS Sight Set, Black

SKU: 5165448415
SKU 5165448415
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: 5165448415

Questions and Answers

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Browse 19 questions Browse 19 questions and 59 answers
Is this California compliant with the flash suppressor & can a muzzle brake be swapped ?
Peter B on May 17, 2018
BEST ANSWER: You can swap it yourself. I dont even think a slingshot is CA compliant.
does it have the forward assist?
rick p on May 17, 2018
BEST ANSWER: Yes, yes it does.
Can 5.56 ammo be fired through the .223 Wylde Barrel?
Paul W on Dec 28, 2018
BEST ANSWER: Yes it can, I've put 1000 rds through one
What does it weigh? Touts lightweight...but no specifics
Donald E on Dec 28, 2018
BEST ANSWER: It’s right around 4.5 lbs
What is the difference between this model and 516446673?
Dusty M on Dec 26, 2018
BEST ANSWER: The only difference is the rail system
Is the included bolt carrier group high or low shelf?
Teebo on Apr 3, 2019
BEST ANSWER: I have not read anything anywhere about a shelf in the bolt carrier group. The only thing I can find referring to the shelf is a lower receiver, which is not part of this assembly.
The BCG included is the heavier full auto profile. If you have a legal full auto lower assembly to put it on, than this will fire full auto.
Will the 1:7 twist be OK shooting xm193 or other 55gr loads?
jordon b on May 19, 2018
BEST ANSWER: Absolutely, that is a great twist for that round up through 77grn
Will this cycle properly with both carbine and rifle length buffer systems, (without getting into the various weighted buffers)? And which one is better suited?
Mike F on Apr 14, 2019
BEST ANSWER: Yes it should work fine with either. Rifle systems have a longer tube, and buffer weight than carbine. But they should both work as long as you don't mix any parts between the two.
Are these sights flip up?
Timothy W on Jun 23, 2019
BEST ANSWER: Yes magpul flip up sights, and the extra couple inches of barrel length does make a noticeable difference of accuracy
Can I use this upper with a lower that is not full auto ?
Jose M on Aug 6, 2019
BEST ANSWER: Yes you sure can. I've purchased this upper and installed on a standard semi auto lower and it shoots great. I was also shooting sub MOA groups beyond 200 yds.
Hope this helps.
To have a complete operational ar15 will I just need this and a lower?
Jose M on Aug 6, 2019
BEST ANSWER: Yes, but it will need to be a complete lower with all lower parts, PSA has great deals on complete lowers that will work great with this upper
Can I use this upper with a lower that is not full auto ?
Jose M on Aug 6, 2019
BEST ANSWER: A full auto bolt carrier profile just means the tail end of the bolt carrier is designed to be able to tip the full auto sear if you have one installed and engaged with full auto or burst selector. For semi automatic applications, it really means nothing.
How is the flash suppressor pinned? Is it easily removable, or will it need to go to a gunsmith?
Cory K on Sep 23, 2019
BEST ANSWER: The flash suppressor is not pinned, it uses a one-time crush washer that is torqued to specs. You will need a bench vice with a solid temporary bench magazine inserted and a torque wrench. Make sure the new suppressor comes with a new crush washer.
Are the sights aluminum or polymer?
ALTON L on Apr 22, 2019
BEST ANSWER: Good quality polymer sights.
Who make this stainless steel barrel for you guys..? Thanks
Doug E on Jun 20, 2019
BEST ANSWER: Of the one I bought, the barrel is made by FN, but I believe more than one barrel manufacturer is utilized.
Are the BCG and charging handle that come with this upper compatible with a 6.5 Grendel upper?
C.J. M on May 21, 2019
BEST ANSWER: 6.5 Grendel and .223/5.56 do not share the same parent case, so the face of the bolt will have different dimensions. Not compatible.
Is this an FN barrel 😁?...
J L W on Jun 24, 2019
Is this available in fde?
Arnie on May 30, 2019
I want to purchase this item, but I’m a CT resident. Will you ship this to my local FFL in CT?
Cory K on Sep 21, 2019


4.7 / 5.0
41 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
The shipping was fast all the anodized parts match color and texture I'm not a ar fan but a 2A Supporting planning on building an pa 308 for deer hunting
October 14, 2019
love the look
only put a few rounds through it love the way it shoots will do more test when red dot comes in
August 16, 2019
4 months ago
Great upper with a great price and best of all great accuracy, purchase with confidence this is my third upper and no regrets.
August 4, 2019
4 months ago
I'm definitely pleased with the performance of this rifle!
What can I say, dialed it in, kept a good group at a sustained rate of fire.
Sighted in and ready to rock and roll!😲
Sighted in and ready to rock and roll!😲
July 16, 2019
5 months ago
Extremely happy with that accurate reliable couldn't ask for anything more.
July 14, 2019
6 months ago
High quality
High quality. The perfect upper for my build. Have put 500 rounds through it with out any issues
July 12, 2019
5 months ago
Unexpectedly fantastic
Fit perfectly into my existing lower. 3/4” groups at 100 yards with match ammo all day long. Super pleased.
July 9, 2019
5 months ago
I'll be back!
Overall very happy with everything I have purchased. A friend recommended and I now I have done the same! For my first experience with Palmetto State, I couldn't be happier! Prices are great, as is the selection. I will be back!
All together! Love the way this rig looks andhandles.
All together! Love the way this rig looks andhandles.
July 7, 2019
4 months ago
PSA AR15's is all I buy now.I am no longer a financial sucker to the other manufactures.
June 26, 2019
5 months ago
Great upper at twice the price!!
Purchased this to build a coyote gun and it did not fail. Groups of 1moa with 69grain match king were leas than 1 moa out of both builds.
June 25, 2019
5 months ago