ar-15 barreled upper assemblies for sale

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PSA 20" Rifle-Length 6.5 Grendel 1/8 Stainless Steel 15" Lightweight M-Lok Upper - With BCG & CH - 5165448709

In stock

Special Price $ 379.99

Regular Price: $ 569.99

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 (CA Health and Safety Code Section 25249.6).

SKU: 5165448709
UPC: 5165448709
MFR#: 5165448709

Barrel Length: 20"
Gas System: Rifle-length
Barrel Profile: A2 Style
Barrel Steel: 416R
Barrel Finish: Stainless Steel
Chrome Lining: None
Muzzle Thread: 5/8-24
Chamber: 6.5 Grendel; Type 2
Twist Rate: 1:8
Barrel Extension: M4
Diameter at Gas Block: .750
Gas Block Type: Low profile adjustable gas block
Muzzle Device: A2 Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA 15" Lightweight M-Lok Free Float Rail
Bolt Carrier Group Included: Yes
Bolt Steel: 9310, Nitride Coated
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Overall Length: 26.5"
Weight as Configured: 4.5lbs

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Barrel: 416R Stainless steel. Chambered in 6.5 Grendel, with a 1:8 twist, 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 adjustable 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: Full-auto profile bolt carrier group. 9310 steel bolt, Shot Peened, Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec. 8620 steel M-16 profile carrier is nitride treated.

SKU: 5165448709
SKU 5165448709
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: 5165448709

Questions and Answers

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Browse 23 questions Browse 23 questions and 70 answers
Is this a Grendel Type II bolt and barrel?
Jim W on Jun 26, 2018
BEST ANSWER: The listing for this upper now states that it is 6.5 Grendel Type 2.
Is this barrel 5R rifling?
Howard S on Jul 9, 2018
BEST ANSWER: I believe it is
What brand barrel is this? Also is it Sammi spec II?
Marcus C on Jun 26, 2018
BEST ANSWER: Over on the PSA forum they had a follow up from their rep a few months ago about them tooling up for 6.5 grendel production and down the road 6.8 and was mentioned that these are manufactured by PSA. Which I am pretty sure all but the CHF barrels are made in house
MOA ?? Come on guys I'm itching to buy one these but need 100 yard MOA. Let's post some reviews of this upper.
John John on Jul 19, 2018
BEST ANSWER: "MOA" is MOA, regardless if it is 100 yards (just a bit over 1.04") or 1000 yards (do the math). Will this upper turn 1 MOA? "Probably", but there is more to it than just the upper or the barrel Head spacing, ammo quality, upper fit to lower, barrel
nut torque, bolt face, bolt lockup, barrel contact... Get the point?
Am I correct that the Grendel will fit a 5.56 lower or a 6.8 SPC lower? Are there any other changes necessary to make it function properly?
Bobzilla on Jun 26, 2018
BEST ANSWER: You will need to order a 6.5 grendel magazine. They function better with the correct one. E-lander makes a good one
Which screw in the gas block is the adjustment screw? front or side?
C S on Jul 13, 2018
BEST ANSWER: The one that faces out towards the muzzle/front. The smaller side bolt is the retainer.
Will this upper fit my PA-15 lower?
Darren K on Jun 27, 2018
BEST ANSWER: The PA-15 is a mil-spec 5.56 AR lower so, yes, the 6.5 Grendel upper will fit.
Will a 6.5 upper fit on my psa10 lower?
Kim F on Jul 9, 2018
BEST ANSWER: No it will not. the PSA 10 lower is for .308 or 6.5 Credmore. This 6.5 Grendal upper will fit on any standard AR-15 or AR Multi-Cal lower.
Will 6.5 go together with my psa10 lower?
Kim F on Jul 9, 2018
BEST ANSWER: This is 6.5 Grendel. It is designed to work on any mil-spec AR-15 lower. 6.5 Creedmoor, however, is the upper which will work on your PA10 lower.
Once I pair this with a lower is it ready to fire?
Logan H on Jul 17, 2018
BEST ANSWER: Yes it’s a complete upper assembly
will this fit a DPMS lower LR-308 type?
Harry on Oct 18, 2018
BEST ANSWER: NO - The 6.5 Grendel Upper will fit on AR-15 Lowers NOT AR-10 Lowers
What caliber is this?
Hunter C on Jul 9, 2018
BEST ANSWER: 6.5 Grendel - Designed to work on the AR-15 platform.
What lower matches up with the 6.5 grendal?
Rick R on Feb 18, 2019
BEST ANSWER: AR 15 lower. The buffer and spring IMHO should be rifle, not mid length or carbine configuration. This isn't a must. My PSA of the shelf lower does fine but some claim problems that have always been remedied with a heavier buffer or adjustable gas block if you are knowledgeable about such things.
Will I need a Different buffer and spring to make this more reliable ?
Jeff V on Oct 9, 2018
BEST ANSWER: A standard carbine buffer is perfect for the 20" 6.5 Grendel.
What are the two holes, one on either side of the handguard, used for?
CA on Nov 10, 2018
BEST ANSWER: Need more specific information. As the picture of the upper shows, the two holes underneath the receiver are where you attach the lower fire control unit with pins that are attached to the lower. Hope this helps.
Will AR15 7.62x39 magazines work with 6.5 Grendel?
B-Dub on Nov 18, 2018
BEST ANSWER: In short no they wont. The best option is dedicated 6.5 Grendel mags if you want to rule out malfunctioning magazines. The general consensus is that Elander magazines are the best for the 6.5 Grendel. They sell bands etc that slip over the magazines so you don't have issues confusing then with your 5.56 mags etc.
Can the 6.5 Grendel type 2 fire a round bigger than 120 grain bullet ??
Tim A on May 4, 2019
BEST ANSWER: Hi Tim. The short answer is yes. I’ve had the best luck with the Hornady Black ammo with the 123 grain ELD. I have not tried anything heavier yet. However, I have heard good things about the Berger 130
Hey guys how long did it take to get you Grendel uppers?
Lee H on Mar 22, 2019
BEST ANSWER: 3 to 5 business days
Mine came in 3
What tool is used to adjust the gas block? The "screw" in mine looks round.
Fabian R on Sep 3, 2018
BEST ANSWER: Alan tools will be your best bet. T handle style works well, l shape works just as good.
I believe the sizes are standard .050 for the set screw and 5/64 for the adjustment screw
Do I need a rifle length buffer tube for this upper?
Cartermacd17 on Jul 19, 2019
BEST ANSWER: No , but in my experience the A2 rifle buttstock with rifle buffer and spring gives the best performance . With carbine buffer and spring , you may have to try heavier buffers or springs-if you don't have an adjustable gas block - to get the best ejection pattern and function . However , standard buffer may work just fine .
I just put together a 6.5 grendel and i cant get the bolt to go all the way back. The upper receiver was complete with bcg and ch and i built the lower. I can get it back if i have it just a little above the lower but i cant get the lins in. Is there anything i can try?
Chris P on Dec 19, 2018
BEST ANSWER: I had an issue like this on a different build. On mine it was due to the 6-position buffer tube. I replaced the buffer tube with another one and my problem was resolved. My bolt will now go back all the way and the bolt hold open can now catch the bolt after the last shot is fired. Maybe you have the same issue so if you have another buffer tube I would give that a try.
Will a 5.56 buffer spring assembly function properly with 6.5 grendel ?
Preston C on Oct 21, 2018
BEST ANSWER: The 6.5 Grendel complete upper just replaces the 5.56 upper and you just need the correct magazines and ammo.
can you put a bipod on this?
Davdi B on Jul 18, 2018
BEST ANSWER: Yes. M-lok, M-lok to pic rail, M-lok to swivel stud for Harris, take your pick.


4.6 / 5.0
45 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
A complete 6.5 grendel for 450 bucks? Hell yeah, I’m very happy with this rifle, very light and functions well.
The upper fits well on a windham lower, I then received my PSA lower and it was a perfect fit. I tested for reliability with 40 rounds of hornady black and it cycled everything with no issues.
My 20 inch PSA 6.5 grendel upper with a PSA complete lower.
My 20 inch PSA 6.5 grendel upper with a PSA complete lower.
August 18, 2019
1 month ago
Exceeded my expectations
My testing so far is limited but so far it has exceeded my expectations. After sighting in with the back up iron sights I then zeroed in with my scope. This was using a Nikon Monarch5 3.5-15X scope set to 15X and the target below was shot at 100 yards using Wolf 100 grain FMJ. I knew immediately that I had pulled the shot that went high and to the right. Even so I felt that this was a pretty decent pattern with the Wolf ammo used.
I have not yet had a chance to shoot it out to longer ranges or using better ammo so I am not sure how it will do there. Most of the area where I hunt has limited range shots so this find upper should do everything that I ask of it if I do my part. For the price I do not think you could go wrong.
10 shot string with Wolf 100 grain FMJ at 100 yards.  Hot July day in Texas.
10 shot string with Wolf 100 grain FMJ at 100 yards. Hot July day in Texas.
August 10, 2019
2 months ago
A lot of bang for your buck !
I bought this as a gift for my husband and he is elated . He said that every brand of factory loads he has tried has not shot any group over 3\4's of an inch at 100 yards with some even less , also , this upper has been 100% reliable . I would definitely recommend .
August 10, 2019
2 months ago
I absolutely love this product and PSA, purchasing was easy and it arrived very fast. The quality is awesome and the fit is amazing on my AR lower even though the lower isn’t PSA. The upper did need to be cleaned before I installed it which made me happy because I know they test fired it first and that nothing crazy was going to happen when I used it. I highly reccomend PSA due to their exceptional quality and customer service!
August 10, 2019
2 months ago
A Quality 6.5 Grendel for $400.... Amazing
Well constucted, accurate and made to reach out and touch whatever you have in your sights. PSA quality at an unbelieveable price. Outstanding!
August 2, 2019
3 weeks ago
Sub Moa
Sub moa with Hornsby black match I'm still working up a reload for it definitely gtg
July 15, 2019
2 months ago
6.5 grendel
I only got to try it out once since I got it but the first 6 shots would not eject
going to try it again in a few weeks and call PSA for assitsance
July 9, 2019
3 months ago
Why pay more?
After a few “ break-in” shots, cleaning between each, my 5 shot groups at 100 and 200 yds were less than 1 MOA - and that was with optics that cost less than the upper! Definitely recommend - and PSA’s warranty gives peace of mind if something does go wrong.
June 30, 2019
3 months ago
Save your money on this one unless you need a fancy tomato stake or crowbar
Shot 3"-5" grps@ 100 yds with Hornady black. Sent back to psa. Got it back and still shoots same. Functioned well but accuracy sucks. Never again
June 10, 2019
Response from Palmetto State Armory
We do apologize for that. Please contact Customer Service so we may resolve this issue.
June 11, 2019
Casey S
6.5 upper, good buy
I purchased this up a few months ago while on sale. I’ve had 3 trips to the range with it and am pleased so far. It took about 40 rounds for the barrel to break in and settle down. With federal GMM it shoots 1moa. 2 Hornady loads and 1 American eagle about 1 1/2 moa. Wolf and the like about 2-2 1/2 moa. It came a little undergassed but 1 turn of the gas block and it runs good now. Overall I am happy with the purchase
May 20, 2019
6 months ago

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