PSA 8.5" Pistol Length .300 AAC Blackout 1:7 Nitride 7" Lightweight M-Lok Upper w/o BCG & CH -

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PSA 8.5" Pistol Length .300 AAC Blackout 1:7 Nitride 7" Lightweight M-Lok Upper w/o BCG & CH -


Quick Overview

free shipping Free Shipping applies to this item only and not the entire order.

It is the customer's responsibility to be aware of all applicable laws and regulations regarding the purchase and ownership of uppers with a barrel length of less than 16". Federal NFA regulations are applicable to this item.

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: 5165458106
UPC: 5165458106
MFR#: 5165458106

Barrel Length: 8.5"
Gas System: Pistol Length
Barrel Profile: Heavy
Barrel Steel: 4150V 
Barrel Finish: Nitride
Chrome Lining: None
Muzzle Thread: 5/8-24
Chamber: 300AAC Blackout
Twist Rate: 1:7
Barrel Extension: M4
Diameter at Gas Block: .750
Gas Block Type: Low-Profile
Muzzle Device: A2 Style Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA 7" Lightweight M-Lok Free Float Rail
Bolt Carrier Group Included: No
Bolt Steel: N/A
Bolt Carrier Profile: N/A
Charging Handle Included: No
Overall Length: 18"

Add To:

Barrel: 8.5" Chambered in 300AAC Blackout, with a 1:7 twist rate, M4 barrel extension, and a pistol length gas system.  This nitride barrel is finished off with a PSA 7" Lightweight M-Lok free-float rail, .750" diameter low profile gas block, and an A2 flash hider.

Upper: Forged 7075-T6 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.

SKU: 5165458106
SKU 5165458106
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: 5165458106

Questions and Answers

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Browse 4 questions Browse 4 questions and 4 answers
The title says the twist rate is 1:8. The description says 1:7. Which is it?
S.T.A.R.COM on Apr 29, 2019
Ditto on the twist rate question.... is it 1:8 or 1:7? Crossing fingers for 1:7...
Earven S B on Apr 29, 2019
BEST ANSWER: I have received upper and can verify 1/7 is marked on the barrel.
Will this upper work on ar10 lower?
Jose A on May 12, 2019
BEST ANSWER: For you? Yes. For everyone else, this is for an AR-15.
Can I add a picatinny rail to the bottom of the handguard so I can add a bipod?
Nathan S on May 9, 2019
BEST ANSWER: you can add rail sections with mlok adapters... But not really sure why you want a bipod on at 8.5 in 300 blackout.


5.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
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1 Star
This .300 AAC Blackout upper is very nice!! It’s good quality for an affordable price. Also, I received it in 3 days of ordering…awesome!!! I highly recommend…
May 3, 2019
Solid little bastard
Great upper for the price. Threw it on a pistol lower, threw in a random BCG and some MBUS sights, took it to the range, and it performed (shocker!) exactly like an upper should.

Arrived in a plain cardboard box, with a much smaller and prettier PSA cardboard box inside. I felt around on the inside of the upper, and to my happy surprise, my fingers came back covered in gun oil.

I think it was gun oil.

It tasted like gun oil.

BUT WAIT. I haven't even got to the best part yet! I paired the upper with a few more lowers that I had, just to see how tight it locked up against a few different brands...

NO. SLOP. AT. ALL. (although that's probably more of a complement to the quality of the upper receiver itself than to this product.)

Worked perfect with a standard carbine weight buffer as well, but YMMV.
May 2, 2019
3 weeks ago

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