18" upper with nickel boron charging handle

More Views

PSA 18" Rifle-Length .223 Wylde 1/7 SS 15" Lightweight M-lok Upper With Nickel Boron BCG & CH

In stock

Special Price $ 349.99

Regular Price: $ 559.99

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: 5165449759
UPC: 5165449759
MFR#: 5165449759

Barrel Length: 18"
Gas System: Rifle Length
Barrel Profile: A2 Style
Barrel Steel: 416R
Barrel Finish: Stainless Steel
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" Lightweight M-Lok Rail 
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Overall Length: 26.5"

Add To:

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

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

Bolt Carrier Group: ToolCraft nickel boron BCG has a bolt made of mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec.

SKU: 5165449759
SKU 5165449759
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: 5165449759

Questions and Answers

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 13 questions Browse 13 questions and 40 answers
With the obvious exceptions of the finish and laser engraved logo does the bolt carrier have the same functional specs as the PALMETTO STATE ARMORY 5.56 PREMIUM FULL AUTO BOLT CARRIER GROUP - 8779?
Victor H on Dec 1, 2018
Is this an FN barrel and what's the 100 yard accuracy?
Barry B on Jan 23, 2019
BEST ANSWER: The stainless isn't from FN but it is a quality barrel, mine shoots 1.5 moa with quality ammo. Remember the ammo is the most important part of the accuracy and moa should carry out across all range. 1.5 at 100 will be inch and a half, so 3 inch at 200 and 4.5 at 300 etc
is gas block pinned?
Kevin P on Dec 2, 2018
BEST ANSWER: No, it was not ... I have found that I have never needed a pinned GB. I usually just dimple the marks on the barrel and torque the set screws proper.
Does 5.56 work with 223 wylde barrel?
dallas A on Dec 23, 2018
BEST ANSWER: .223 Wylde is designed to work with either .223 or 5.56.
Is the psa snek 15 stripped lower compatible with this, and if so can I use the standard psa lower kit with it?
infoFUNK i on Jan 25, 2019
BEST ANSWER: Yes, this upper will work with any PSA lowers and lower parts kits. This upper will work also work with any other mil-spec AR-15 lower and parts kit on the market.
What is the correct buffer and spring to use with this upper? Thanks
James L on Jan 17, 2019
BEST ANSWER: Standard Carbine buffer and spring.
Is the flash hider removable?
GRANT S on Jul 14, 2019
BEST ANSWER: Yes. I put a VG6 on mine. Great shooting upper and barrel. 2000 rds without a hiccup.
Will this work with a DPMS lower?
Barry S on Jun 12, 2019
BEST ANSWER: Should be fine with any mil spec ar 15 lower. Mines running on an Aero Precision
What advantages does the Nickle Boron BCG offer? Thanks
Fatelvis on Jun 30, 2019
BEST ANSWER: Nickle Boron offers increased reliability thanks to lower friction and an easier cleanup after firing.
Can this barrel fire 5.56 mm ammo?
Mike L on Jul 14, 2019
BEST ANSWER: 223 can be fired in 556 barrels. 556 generally should not be fired in 223 barrels. 223 Wylde is a compromise that fires both 223 and 556 quite well. Hope this helps. 🇺🇸
Can someone please compare/contrast nitride vs stainless barrels? Is it true that nitride are generally harder thus giving it a longer life and stainless will be more accurate?
James C on Jul 6, 2019
BEST ANSWER: This is a plain stainless barrel. You can nitride stainless and you can nitride carbon steel. Nitriding will increase the barrel's useful life. Both can be made to the same level of accuracy. This barrel should last at least 6000 rounds with out of the box accuracy. Probably double that if you take care of it (no mag dumps). You can replace the barrel for less than 200.00 if you ever get to the point that you wear this one out.
Is the gas block made of quality steel or an aluminum of some kind?
Huggy on May 22, 2019
BEST ANSWER: Yes... It is made of steel or aluminum of some kind...... it is steel
Any idea of the barrel weight..?
Doug E on Jul 5, 2019
BEST ANSWER: More than pencil. Less than H-bar.Two ounces more than the 16 inch types.


4.7 / 5.0
23 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Awesome first upper
Love this upper so far. Did a 50/200 yard sight in and got 10 consecutive shots covered by a dime. I’ll take that!
User submitted image
Added Sep 4, 2019
September 4, 2019
3 months ago
Fantastic upper
This upper exceded my expectations. For the price I thought it would be good but not great, I was wrong. I put a 6.5X20 Leupold scope on it and use it in the military benchrest matches at the local gun club. I won the match last Saturday, 8-10-19 , with a score of 400 36X out of a possible 400 40X. I was shooting 10 shot groups you cover with a quarter at 100 yds. All my uppers will come from PSA
August 11, 2019
4 months ago
PSA 223 Wilde
My first AR15 build and everything went together well. I am very pleased with the quality of the products.
August 6, 2019
4 months ago
Solid deal, nice NB BCG and barrel
Really nice, for the price. The Nickel Boron BCG is excellent quality, as is the SS barrel. I've run this upper on 3 different lowers and it's a track driver with .223 from 100-200 yds. Possibly farther than that, but I need a better optic before I try. It's heavy, and the finish on the handguard can easily scratch but I personally like a heavy long barrel, and you can always cerakote it yourself.
August 5, 2019
3 months ago
Not a happy PSA customer
long break in time and jamming issues. Lubricanted the bcg and upper well but the bcg kept getting jammed in the chamber. To the point that l couldn't even pull the charging handle back. Had to take off the upper and pry the bcg out with a screwdriver. Now I've built a couple of AR'S in the past. So I'm not someone that's new to this. I have never had this kind of problem before. After a couple of times again with the screwdriver l was however able to get it going but the whole experience with your product was not a happy one. I now keep a screwdriver in my gun bag just incase. Not sure if I will order from you guys again....very unfortunate.
August 2, 2019
4 months ago
Response from Palmetto State Armory
We do apologize for that. Please contact Customer Service with your order number so we may resolve this issue.
August 6, 2019
Casey S
Great buy
Fast shipping, excellent fit and finish, matches solidly to my PSA lower. So far only have 60 rounds of low cost 5.56 55 grain through it but it has functioned perfectly with no failures to feed or eject. Bolt on last fired mag round stays open as it should. Tightened the fore end and loctited it and also disassembled and cleaned and lubed upper before heading to range. Will be adding some glass and a tripod next. Great job PSA, will be buying here again.
July 31, 2019
3 months ago
A great piece of gear at good price. PSA is always 5 stars.
July 29, 2019
3 months ago
Great upper!
My experience so far has been fantastic!
The upper shipped fast! (I also ordered the PSA EPT MOE Lower Build Kit - 778097)
The cost to quality are outstanding!
The fit and finish on my upper are really good. (I'll add pictures soon)
- The nickel Boron BCG looks great(no marks or machining marks, good staking).
- The Free-float hand guard is simple, light, slim and well thought out.
- The barrel is clean, well marked(as in caliber,twist rate, etc.)

I've fired 200 rds so far, no malfunctions, only one type of ammunition 5.56 55gr.(W white box).

the accuracy looks good(I only have access to a 25 yd indoor range currently)

My only 2 cons:
- I found one tiny little blem on the free-float rail(doesn't effect functionality)
- No weight listed on product page

I'll update the review once I get more rounds through this upper.
July 13, 2019
3 months ago
Awesome upper
Great upper well constructed will be a nice addition to my lower
July 6, 2019
4 months ago
Excellent as always.....
Outstanding quality on this upper. PSA continues to produce high quality AR parts at very affordable prices.
June 15, 2019
6 months ago