PSA 16" Mid-Length Pencil 5.56 NATO 1:7 Stainless Steel 13.5" Lightweight M-LOK Upper with NiB BCG, CH, & MBUS Sight Set

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PSA 16" Mid-Length Pencil 5.56 NATO 1:7 Stainless Steel 13.5" Lightweight M-LOK Upper with NiB BCG, CH, & MBUS Sight Set


Quick Overview

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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: 5165451345
UPC: 5165451345
MFR#: 5165451345

Barrel Length: 16"
Gas System: Mid-length
Barrel Profile: Pencil
Barrel Steel: 416R Stainless Steel
Barrel Finish: Natural
Chrome Lining: None
Muzzle Thread: 1/2-28
Chamber: 5.56 NATO
Twist Rate: 1 in 7"
Barrel Extension: M4
Diameter at Gas Block: .625"
Gas Block Type: Low-profile
Muzzle Device: A2 Style Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA 13.5" Lightweight M-Lok Rail
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158, Nickel Boron
Bolt Carrier Profile: Full-auto 
Charging Handle included: Yes
Overall Length: 24.5"

Add To:

Barrel: 16" 416R stainless steel, chambered in 5.56 NATO, with a 1/7 twist, M4 barrel extension, mid-length gas system, and a lightweight pencil profile. This barrel is finished off with an 0.625" diameter low profile gas block, PSA 13.5" Lightweight M-Lok free float rail and an 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.

Includes: Magpul MBUS Sight Set, Black

SKU: 5165451345
SKU 5165451345
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165451345

Questions and Answers

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Browse 24 questions Browse 24 questions and 31 answers
What is the weight?
claude s on Mar 20, 2019
BEST ANSWER: Mine weighs 3 lb 11 3/4 oz without the MBUS sights
Is the nickel boron bcg with this kit logo’d or no logo?
Slime on Mar 22, 2019
If I purchased one before the site went out of stock is mine going to actually ship out or was it falsely advertised that they were still in stock and now have to wait till they restock?
Logan W on Mar 30, 2019
Can i use this with the aero M4E1 lower?
Alen818 on Apr 12, 2019
BEST ANSWER: It should fit and function with no problems at all, as the Aero lower takes "milspec" parts.
Will it fit AR 15 lower pistol?
MICHAEL M on Apr 10, 2019
BEST ANSWER: It will fit any mil-spec lower.
are the stainless barrel supposed to be more accurate than the nitrate barrels?
garret l on Mar 14, 2019
BEST ANSWER: Yes it is more accurate, but heats up a lot faster. Generally not the best choice if you are building a combat rifle when you will be shooting a lot of rounds in a shorter period of time. For the avg weekend warrior it will be fine. Just don't blow through ammo like water.
Can I buy this upper if I live in cook county Illinois?
wei f on Mar 27, 2019
BEST ANSWER: You need to look up your local laws. " Google is your friend "
This upper can shoot .223 rounds correct?
Tsai M on May 20, 2019
Are there heat problems with SS?
Jeff B on Mar 16, 2019
BEST ANSWER: If heat were a problem with SS manufacturers would not use it. The amount of heat generated by shooting a round is constant. Heat is absorbed by and dissipated by the barrel. The thinner the barrel profile, the faster it heats up. Likewise, the thinner the profile, the faster it dissipates heat.
Is gas lock dimpled or pinned to barrel?
JIANQING C on May 19, 2019
The bolt carrier profile says full-auto, does that come in sem-auto?
David T on May 14, 2019
Will a bushnell TRS 1×25mm red dot 731303 fit on the weaver mounting rail?
Jamie on May 22, 2019
BEST ANSWER: I'm not familiar with that sight but if the mount on the sight is a weaver style it should fit You may have to put a spacer on to raise the sight up to get a good "check weld"and get a good natural sight picture without cranking your head over. You usually have to do this with scope sights even with high mounts. Those spacers are available with most AR accesories.
Does buffer tube come with this upper? Is buffer tube usually included with the butt stock or is it a separate purchase?
GunNoob on Mar 29, 2019
BEST ANSWER: This is a complete upper. The buffer tube is a lower part, and not included in this
Does this upper come with pins to attach it to the Lower?
Aaron w on May 8, 2019
BEST ANSWER: No, the take down pins are installed and stay in the lower receiver on an AR-15.
Can this go on a Ruger ar 556?
jeffery f on Mar 17, 2019
BEST ANSWER: Yes the ar15 is very modular in design
Does this use a standard barrel nut?
Kyle T on May 16, 2019
BEST ANSWER: No, it's a low profile nut to fit under the handguard. Dont sweat it, all you need is a large adjustable wrench to get it off.
Is the the hand guard, a free float rail?
Jackie T on May 14, 2019
does upper receiver and barrel come already assembled?
Solace888 on May 6, 2019
BEST ANSWER: This is a complete upper assembly, so yes - everything already comes assembled
does the upper and barrel come fully assembled or will it require assembly once shipped?
Solace888 on May 6, 2019
BEST ANSWER: This is a complete upper assembly and comes that way out of the box, the only assembly will be installing it on to a lower receiver.
Is the flash hider fixed/pined to the barrel?
mthoran92 on May 6, 2019
BEST ANSWER: No, it is a standard A2 that I had to remove because it is banned in California. I replaced it with a Surefire compensator.
Who makes this upper?
Robert S on Mar 13, 2019
Who makes this upper?
Robert S on Mar 13, 2019
BEST ANSWER: Palmetto State Armory.
Does it come in flat dark earth?
Michael K on May 16, 2019
Is there a bottom rail attachment to buy to install bipod?
Brett on May 16, 2019


4.9 / 5.0
21 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I will purchase more of these uppers.
Got about 500 rounds through it. Runs like a Swiss watch. The NiB bcg wipes clean with little effort.
May 25, 2019
2 months ago
Great pricing for a Fine Stainless Upper
Looks great, shoots better than I do, and I really like the Nickel Boron BCG. It's so easy to clean. Nice Upper !
May 24, 2019
2 months ago
Easy to carry and clean
I wanted this for a special purpose. The lightweight and stainless barrel are easy to pack and maintain. Mid length gas system “seem” to shoot smoothly for me. The free floated hand guard is nice to jam into any possible rest I can use to steady up. These bolts clean up easier.
Just a great overall configuration that is so usable. None of mine have been tack drivers, and that’s not why I buy them. They’re a bargain.
May 22, 2019
2 months ago
Great Hardware!
The fit and finish is exactly what I wanted and expected! High-quality pieces make a high-quality gun! Thanks!
May 22, 2019
2 months ago
Dependable Accurate Affordable
Over 1000 rounds fired. No malfunctions and accuracy is great. I highly recommend this AR!
May 20, 2019
2 months ago
Loved it have had zero problems with it
May 19, 2019
2 months ago
Good price, Solid item!
I am very satisfied with this upper receiver.
It’s very good, and solid.
It’s a very good price.
I will recommend.
User submitted image
User submitted image
May 19, 2019
2 months ago
Great value on quality parts! Who said PSA doesn't do high end?
Nice setup. Great to get high end extras like the lightweight barrel and sights, NIB bcg. They used a super simple barrel nut to fit under the super slim handguard. Wish Stoner'design was that simple. Pretty easy to disassemble for cerakoting, like I did.
The handguard is super low profile and lightweight.
Plus the SS barrel and NiB BCG give it a tiny bit of flash.
May 17, 2019
2 months ago
Great deal on a quality upper.
Got the inspiration for this from In Range TV's What Would Stoner Do project. Great deal on sale with the stainless pencil barrel, NiB BCG, and Mbus sights. Highly recommended!
May 17, 2019
2 months ago
Lightweight - Shoots Straight
I am very pleased with my new lightweight upper. I haven't gone long range with premium ammo yet, but I have completed the barrel break-in and the accuracy looks promising.
This is my first M-Lok tube and the sling swivel for the bi-pod attachment mounted securely once I figured it out.
The Nickel-Boron plated bolt carrier group is beautiful. I thought it was polished stainlees steel when I first saw it. I see that it is a $90 value by itself.
I am not using the MBUS sight set because I am old and need a scope.
I could not have bought the parts this price.
Thanks PSA, keep up the good work.
May 17, 2019
2 months ago

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