18 inch ar-15 m-lok barreled upper assembly

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PSA 18" Rifle Length .223 Wylde 1/7 Stainless Steel 15" M-lok Upper With BCG, CH, & MBUS Sight Set - 5165448754


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: 5165448754
UPC: 5165448754
MFR#: 516446673

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.

Bolt: Full-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: 5165448754
SKU 5165448754
Department Uppers
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Unit Price N/A
Youtube Video No
Free Shipping? No
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165448754

Questions and Answers

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Browse 11 questions Browse 11 questions and 15 answers
What's the difference between this one and the 516446673?
Dean N on Nov 12, 2018
BEST ANSWER: The Pic rail and the forend is different. the SKU ending in # 673 is full length Pic rail. The SKU ending in # 754 the pic rail ends after the top receiver/barrel nut.
How is the stainless steel barrel made?
Mark K on Feb 1, 2019
Can I get this with either no muzzle attachment or a muzzle brake as flash suppressors are illegal in mass ?
Robert S on Aug 20, 2018
BEST ANSWER: Call Palmetto and ask customer service.
What's the difference between this one and the 516446673?
Harry C on Mar 21, 2019
What is the difference in the 223 Wilde and a normal 223 and is it safe and accurate to fire the 556 and a normal 223 in this upper?
Steven L on Jul 13, 2018
BEST ANSWER: A quick search turned this up, “Well, the most obvious reason [reharding using a 223 Wylde] is that you can fire .223 ammo without giving up accuracy and 5.56 ammo without worrying about excess pressure. Sure, you can fire .223 ammo all day from a 5.56 without worrying about pressure problems thanks to generous chamber size, but if you really want to tighten those groups that .2240 freebore diameter helps. In fact, .223 Wylde chambers are known for extreme accuracy, which is better on the whole than what you can expect from a standard 5.56×45 chamber.”
Whats the shiiping lead time?
Dan75 on Oct 9, 2018
BEST ANSWER: I live in Washington and it took me about 7 business days to get mine
How well does this upper with a rifle gas system marry up to the Blackhawk carbine butstock? Is the buffer and spring adequate or should they be beefed up
Darin A on Jan 14, 2019
BEST ANSWER: I took a complete, psa lower coupled with this upper and had no problems after a proper gas block alignment, which, be warned, you may need to do or have done if you go with this upper. Once gas was flowing properly it runs like a clock! I’m sure you’ll have the same results assuming the Blackhawk has the same springs as my psa-magpul moe enhanced lower. Goodluck!
will the wylde 18 in work on m&p sport 2 lower?
james d on Jul 13, 2018
BEST ANSWER: Hey James, the "Wylde 18" is the Chambering, has nothing to do with "will it work or fit your M&P lower... AR15 is and AR15, In other words, this UPPER Will fir Your Lower NO Problem! Peace Jeff
Can an Mlok rail section be added to the top of this rail for say a pressure pad for a weapon light?
Derek H on Jul 16, 2019

Yes, you can add an Mlok rail section for accessories to the top of the rail.

Best Regards
(Name Redacted)
PSA Customer Service
Will this upper work with the psa gen 2 lower?
Richyrich on Feb 16, 2019
BEST ANSWER: It should work just fine. I put mine on a Anderson lower. Any mil-spec lower should work.
Can you ship this without the flash hider and with a barrel cap?
Carolyn B on Jan 22, 2019


4.8 / 5.0
16 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
It’s a great upper.
I my upper likes Winchester USA READY .223 62 grain “Open tip”. The federal premium 69 grain Sierra matching BTHP had to be the best grouping!
Sorry I had to ad my big dog Mikado!
At the range.
Federal ammunition
Winchester ammunition
July 15, 2019
4 months ago
Love it
Good upper very nice quality there is a bit of play between upper and lower but im unsure if thats the upper or lowers fault but great product
April 21, 2019
5 months ago
It looked great at University of boxing. The fore grip had what appeared to impact marks from some kind of adjustment? I installed on my lower and put on a scope. I attempted to sight it in but the shot grouping was all over like 4" off. I found the barrel was flexing and hitting thefore grip. I removed it and ground the interference places down.
I'm a very busy person so instead of sending it back. I fixed it myself. Also the gas block wasn't in line with the gas port in the tube and also the barrel. Also fixed that. I finally had time to sight it in and now it's 3/4" spread in 80 yards.
April 3, 2019
6 months ago
Response from Palmetto State Armory
We do apologize for that. Please contact Customer Service so we may resolve this issue.
April 4, 2019
Casey S
Really like it. It perfomed very well right out of the box. Built it with an anderson lower and a red dot scope for shorter distances.
March 24, 2019
6 months ago
Thumbs up all around!
March 23, 2019
6 months ago
Very accurate rifle
Bought this along with stripped lower and parts kit. Received it yesterday and finished the build last night. Rifle will be a police patrol rifle but I temporarily mounted a good scope and went to the range today. After about 15 rounds to zero, I fired a .6 MOA group at 100 yards. I am very impressed. Upper and lower have a good tight fit and all parts were first class. This is my first PSA purchase but I highly recommend them.
February 24, 2019
Great price for .223 wylde. Coyote Slayer
Great upper build. Replaced sights with vortex diamondback and I love it.
February 10, 2019
6 months ago
Worked awesome! I liked those magpul sights
February 4, 2019
8 months ago
Charging handle and bolt carrier group get stuck. 1out of 10 times it gets hung up.
January 27, 2019
8 months ago
Very happy with the product , Thank You!
January 25, 2019
8 months ago

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