18" Railed AR kit with MBUS

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PSA 18" Rifle-Length .223 Wylde 1/7 Stainless Steel 15" Lightweight M-lok MOE EPT Rifle Kit w/MBUS Sight Set - 5165450249

In stock

Regular Price: $ 709.99

Special Price $ 399.99

Quick Overview

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SKU: 5165450249
UPC: 5165450249
MFR#: 5165450249

Barrel Length: 18"
Gas System: Rifle-Length 
Barrel Profile: A2
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" Lightweight M-Lok Rail
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Optics: Magpul MBUS Front and Rear Flip-Up Sights, Black
Fire Control Group: PSA Enhanced Polished Trigger (EPT) FCG

Add To:

Barrel: 18" 416R stainless steel barrel, chambered in .223 Wylde, with a 1:7 twist, M4 barrel extension, and a rifle-length gas system. The barrel is finished with with a .750" diameter low-profile gas block, PSA 15" Lightweight M-Lok Free Float Rail and an A2 flash hider.

Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability. Featuring M4 feedramp cuts, these upper upper receivers are made for us right here in the USA.

Bolt Carrier Group: For AR15 and M16 rifles and carbines. Bolt is made of shot-peened, Mil-spec Carpenter 158® steel. Gas key is secured with grade 8 fasteners and staked.  Includes Charging Handle.

Lower Build Kit:  PSA MOE EPT Lower Build Kit, Black

Includes: Magpul MBUS Sight Set, Black 

SKU: 5165450249
SKU 5165450249
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: 5165450249

Questions and Answers

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Browse 41 questions Browse 41 questions and 82 answers
What is the difference between the wild and 556 or regular 223?
James B on Dec 2, 2018
BEST ANSWER: The dimensions of the reamer used to cut the barrel chamber are slightly different in free bore length and throat angle. The Wilde chamber is supposed to result in smaller groups than those possible with the 5.56 NATO chamber, all other things being equal.
What do I need to get to complete this build? Is it just the bottom receiver ? If so where can I find one?
Zach H on Dec 1, 2018
BEST ANSWER: Yes just the stripped lower receiver. You can by one on here and have it shipped to ur local gun shop or FFL.( your gun shop/FFL will charge a fee) Or just go to ur local gun shop and pick one up.
Does this set up have a threaded barrel for changing flash suppressor?
s k on Dec 13, 2018
BEST ANSWER: Yes it does
What tools beyond a lower and what's in the kit will I need to assemble this rifle?
salif m on Dec 17, 2018
BEST ANSWER: A couple of small puches preferably brass so you don't mar the finish or the pins. A small hammer also preferably brass. It only takes 15-20 minutes to assembly a lower, there's plenty of good videos on YouTube.
Where can I find the lower build for this rifle?
Zach H on Dec 1, 2018
BEST ANSWER: Any AR-15 stripped lower receiver will work. This kit has everything else.
What does the kit end up weighing with a standard receiver, no mag?
mikfel on Feb 8, 2019
Is the barrel hammer forged or button rifled?
GaryS on Dec 2, 2018
BEST ANSWER: Button rifled, and I have seen their barrel manufacturing process. It is impressive to say the least.
Can you shoot 556 out of a 223 wylde barrel?
Charles W on Jan 27, 2019
BEST ANSWER: Yes that’s what the chamber was built for, to get better accuracy out of both .556 and 223
Will a .223 Wylde barrel run steel-case ammo?
Riley M on Dec 22, 2018
BEST ANSWER: Yes...depending on how much gas is going through it it should cycle alright...
Is the flash hider pinned?
wkp515 on Dec 15, 2018
Can I get this in Flat Earth with a drop in trigger?
Cam M on Dec 1, 2018
BEST ANSWER: The deal is for what it is. Buy it
Will this build shoot 5.56?
Robet W on Mar 13, 2019
BEST ANSWER: Yes. For future reference, any gun chambered in ".223 wylde" will shoot .223 qnd 5.56 rounds. The chambering that is .223 ammo specific is called .223 remington.
Is the Upper fully assembled? Will I need a Upper vise block, Armorers wrench etc?
Thanks. First build
jetjoc on Mar 12, 2019
BEST ANSWER: The upper is fully assembled. I would recommend getting a vice block, armorers wrench, torque wrench, punch set and a small mallet to drive the pins for the lower parks kit. Also some good lithium grease and blue loc-tight for some of the screws. I'm on my third build in as many months and If I would have known how easy it is to assemble a rifle in an AR platform, I would have started years ago and have 50 rifles by now. YouTube has some good install videos that will walk you through your first build. After the second build, it becomes almost second nature to put one together. Academy sells a builders tool kit that has almost everything you need however, I found the punch pins they include are lacking so I bought a set from Harbor Freight. Have fun.
Where is the best place to get magazines for this?
Brandon L on Mar 6, 2019
BEST ANSWER: Any online tactical store. I purchased mine from PSA.
They had a daily special with 10 30rd mags with 420rds of ammo. You can also purchase 10 and 30 rd Magpul magazines from Academy sports and Bass pro shop. I would check PSA first for better deals.
Is there any documentation available regarding assembly of this kit? This is my first build and I'd rather not wing it
Dave S on Dec 20, 2018
BEST ANSWER: Midway has great video tutorials on their website. There are tons on YouTube as well.
This is the exact kit I have been looking for but since I live in MD I have to use a “Heavy barrel”. Is there a kit just like this that comes with a heavy barrel instead?
Rick T on Feb 10, 2019
BEST ANSWER: Since this has a .223 Wylde-chambered barrel and not a 5.56 barrel, it is exempt from the HBAR regulation.
What mounts would I need to mount 3.5-10x50 vortex scope?
Victor L on Dec 21, 2018
BEST ANSWER: You would need a set of rings that fits a picatinny/m1913/weaver rail and has the same diameter as your scope tube, either 1" or 30mm. Probably medium or high rings.
What parts are made in USA? Where are the other parts made?
mememe on Dec 20, 2018
BEST ANSWER: Due to the federal regulation 922r all parts are made in the U.S. you cannot import AR receivers or most parts due to the Clinton Administrations sporting rifle rule and 922r.
If I were to buy this and a stripped AR-15 lower reciever, would I need anything else (besides attachments) to build this gun?
Kaden S on Mar 11, 2019
BEST ANSWER: No you wouldn’t need anything else everything is included in kit except the lower
Is this bcg nitride or phosphate finished?
Micheal W on Jan 26, 2019
BEST ANSWER: Looks to be nitride as it is semi gloss black, not flat green or gray. Hope this helped. This is a nice kit, and good value.
What type of trigger?
Ronnie T on Mar 15, 2019
BEST ANSWER: The description states: PSA enhanced polished trigger.
Does this need to be sent to a FFL?
Mat H on Feb 11, 2019
BEST ANSWER: No. This is only considered ”parts”. The lower receiver is what has the serial number on it.
Am I able to buy just the upper from this with the kit not included?
Jacob N on Feb 6, 2019
BEST ANSWER: Not 100% but I’m sure if you call them they would. I bought this set a few months back and I love it! My rifle is shooting 1 1/2 groupings at 150 yards. Kit and upper went together flawlessly!!
Is this kit semi auto or full auto?
Brian S on Feb 10, 2019
BEST ANSWER: Looks like it has a auto bolt carrier group in it, but the trigger group is semi auto.
can this be directed deliver to my home?
Jasha2019 on Jan 11, 2019
BEST ANSWER: Yes, everything included in this build kit can be directly shipped to your house. However, a lower receiver which is not included but is required to complete the build must be shipped to a FFL or you can buy it directly from your local gun shop.
Do they recommend to break in the barrel on this setup?
Michael Q on Dec 6, 2018
BEST ANSWER: This is a carbine, clean the upper and the BCG after assembly, lubricate the gun and shoot it. The U.S. Army field manual recommends you clean an AR every 200 rounds or at the end of the day.
Will the rifle length gas system have issues with cycling rounds? I thought rifles started using rifle length gas systems on 20 inch barrels and up?
lucas w on Mar 18, 2019
Is this legal in California?
Joselito G on Mar 15, 2019
I am left handed. Can this kit be ordered with an ambidextrous safety, bolt catch and charging handle?
David B on Mar 9, 2019
Is this legal in Massachusetts?
Dommy Gunz on Mar 7, 2019


4.8 / 5.0
47 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Good Stuff
Paired this upper to an Anderson lower and the build went smoothly. Replaced the EPT trigger springs with JP reduced power springs, no issues with light primer strikes, and it's a blast to shoot. Shooting 62gr Frontier spire point ammo produces consistent 1-MOA groups at 100yds so far. Hit 4" steel out to 275yds with first attempt after zeroing at 55yds. Topped with Nikon 4-12x40 BDC scope. Can't go wrong with this upper/barrel/LPK at this price point.
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March 17, 2019
Cheaper than any comparable complete address and shoots better
Very impressed so far function's flawless tried 5 shot group @100 with federal 55gr.ball ammo average about 1.5". Aquila 62gr about the same but Hornady American Gunner 55gr bthp was under .75" would highly recommend this kit can't wait to try more loads
4 shots@100
March 14, 2019
Dont even second guess it!
Very decent quality very happy with the kit. Especially for the price with a stainless barrel
March 14, 2019
Good product
All went together smooth for me after I got it. Shipping only took about 4 days The only downside is that it has a few problems with steel cases but I expected that for the most part. Out of about 80 rounds of tulammo steel case, only about 5 didnt eject. Only problems so far otherwsie awesome product.
March 14, 2019
Just fantastic!
I bought this rifle kit a couple months ago, but only recently "built" it. I went out to the range yesterday, and I am blown away. I would like to say I am a great shot, but the fact is, I haven't shot an AR-15 in about 10 years. I have also never tried for accuracy without optics. I fired at a 25 yard zeroing target that simulates 300 yards. After my third group and sight adjustment, I placed two 3 shot groups in the center of the silhouette, all of them in the center 2 inch circle. Now I know what you are thinking, "Wow 2 inches from 25 yards, that isn't great". Remember, this was my THIRD group in 10 years out of a rifle that I had never shot! BTW, I was shooting Frontier 5.56 I got from Bi-mart.

Almost everything was perfect on the upper and the LPK. The tip of the free floating hand guard had a ding in it. I filed it lightly, degreaser it, and applied a TINY bit of aluminum black on it, and it disappeared. The roll pins were the perfect fit. The Magpul furniture is great. I love the stock, but it doesn't have a quick disconnect.

If you are on the fence, just do it. If you get one like I did, you will be happy. I hope this helped someone...I hate writing reviews.
March 12, 2019
Damn near perfect
Bought this about a month ago. It took 6 days to get here. It's my 1st build and very easy. A blast to shoot and very accurate. If my picture uploads it is a real nice group at 50 yards with a $59 truglo red dot sight. I didn't receive the polished trigger that is advertised. Hopefully they will take care of that.
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Added Mar 10, 2019
March 10, 2019
Nice piece
First order from PSA wasn't sure what to expect but was pleasantly surprised showed up in just around a week and was good quality item assembled it on a lower and was happy haven't shot it much but so far very pleased
March 10, 2019
1st AR
This is my 1st AR and I wanted to be able to assemble it so I would understand better how it went together and functioned. All sub-assembly components come bagged separately, this makes it much easier to identify and assemble. All parts are of good quality and fit as they should. I assembled this kit onto an Anderson Manufacturing lower and the fit was perfect. So far I have put about 240 rounds through this gun and function was flawless, fed and ejected every round as it should have, and the bolt locked back every time after the last round. I was concerned about accuracy at this price point, but I was able to put 30 rounds into approximately and inch and a half at fifty yards with Federal American Eagle 55gr FMJBT bulk ammo, this tells me the gun will shoot better then I can. The EPT trigger is very smooth and breaks very cleanly, but it feels heavy to me. I have not been able to test the pull weight, but I am mainly a hunter and I am used to a 3.5lb trigger pull on my Rem 700, just need more rounds through this gun to get used to the heavier trigger. I am very happy that I built this rifle instead of buying an econo AR from a sporting goods store. You just can not do better at this price point, will absolutely be buying another.
March 3, 2019
Fantastic!! Excellent value!
This was my 1st purchase from PSA and it will not be my last!! Fit and finish are top notch. Could not be happier! Fits very well on my billet Noreen Firearms lower.
Finished....for now!
Finished....for now!
February 28, 2019
Great value.
Not sure how you can beat this value.
February 24, 2019
1 month ago

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