BLEM PSA 4" 9mm 6" M-Lok Railed Upper With Fluted Flash Can, Hybrid BCG, & CH - 5165447843

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BLEM PSA 4" 9mm 6" M-Lok Railed Upper With Fluted Flash Can, Hybrid BCG, & CH - 5165447843


Quick Overview

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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.

SKU: 5165447843
UPC: 5165447843
MFR#: 5165447843

Barrel Length: 4"
Barrel Profile: Heavy
Barrel Steel: Chrome Moly Vanadium 
Barrel Finish: Nitride 
Chrome Lining: No
Muzzle Thread: 1/2-36
Chamber: 9mm (9x19)
Twist Rate: 1 in 10"
Barrel Extension: 9mm
Muzzle Device: Palmetto State Armory Fluted Flash Can
Receiver Material: Forged 7075 T6
Receiver Type: M4
Hand guard Type: PSA 6" M-Lok Rail
Bolt Included: Yes (Hybrid G-9)
Bolt Steel: 8620 
Charging Handle included: Yes

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Palmetto State Armory is proud to announce the 9mm Hybrid Pistol upper. Designed to work with Palmetto State Armory 9mm lowers that use either Colt® or Glock®-style magazines.

Barrel: 4" chrome moly steel barrel. Chambered in 9mm, (9x19), with a 1/10 twist. The barrel is nitride treated for durability and finished off with a Palmetto State Armory 6"  M-Lok free-float rail and a Palmetto State Armory Fluted 9mm Flash Can.

Flash Can: Palmetto State Armory's Fluted "FLASH CAN". This is a solid 6061 aluminum device that is designed to direct muzzle gases and the muzzle flash forward. Threaded 1/2-36 for 9mm.  Black military-style hard anodizing.   THIS DEVICE IS NOT DESIGNED TO REDUCE RECOIL, MUZZLE RISE, OR FLASH SIGNATURE. This device is designed to direct gasses and noise forward away from the shooter and enhance the weapon's appearance.

Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability.  These upper receivers are made for us right here in the USA.

Bolt Carrier Group: G-9 Hybrid 9mm BCG. Phosphate coated, 8620 steel, G-9 Hybrid Bolt allows use with either Glock®-style, or Colt®-style magazine, Palmetto State Armory lowers. Includes charging handle.

**These uppers may have cosmetic blemishes that do not affect function. This may include, but is not limited to, forging marks under the finish, scratches, dings, slight variation in the finish color coat.

SKU: 5165447843
SKU 5165447843
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
SKU: 5165447843

Questions and Answers

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Browse 8 questions Browse 8 questions and 43 answers
Diameter of the handguard? I want to use it for my Octane45K(1.37'') instead of the flash can.
B B on Jul 17, 2018
BEST ANSWER: I measured the ID at 1.29"
J M on Jul 18, 2018
BEST ANSWER: Yes it will . But you will need a magwell adapter for your magazine. And should run a heavy buffer like a 5.8 to 8 oz
Will this work with other brand 9mm lowers ?
JoshV on Jul 17, 2018
BEST ANSWER: yes and bet is to use PSA lower build kit with any other stripped lower. Make sure it is a glock style lower.
Will a glock drum mag fit?
Welder89 on Aug 9, 2018
BEST ANSWER: Drum will physically fit but it will matter and depend on your lower. Upper will receive the drum but check dimensions of which Glock it is. 17 vs 19 and so on. As long as there is enough Length to receive and your lower has a block or is a true AR9 Glock lower then yes
Will a suppressor fit on it?
Bigboyblue on Jul 17, 2018
BEST ANSWER: Sure but you will need an adapter or the correct threads on the suppressor for it to fit. It is 1/2x36 not a standard Ar15 thread that keeps someone from screwing on the smaller AR flashhider ouch !
Does the last round bolt hold open work if using the KAK mag well insert (designed for standard ar LRBHO to remain functional)?
Brad H on May 7, 2018
I mounted my 4" upper on a PSA 9mm dedicated lower with LRBHO. If you look at the upper listing I think they are only compatible with the PSA 9mm lowers. Do not think it will work on a AR lower with adapter block.
Are the bolts ramped?
M Y on Apr 18, 2018
BEST ANSWER: Yes. It is the PSA hybrid ramped bolt.
Is the bolt carrier forward assist compatible?
Cory B on Aug 9, 2018


4.8 / 5.0
24 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Do better palmetto
Came with lots of scuffs and 3 dents on hand guard past the anodizing ...
August 19, 2018
1 week ago
Response from Palmetto State Armory
We do apologize for that. Please contact Customer Service so we may resolve this issue.
August 20, 2018
Casey S
"Looks" like it will function.
Fit and finish are "fine"; haven't been able to run it because the PSA lower I ordered to go with it came minus an ejector. Still shaking my head over that one.
August 18, 2018
1 month ago
Great upper, perfect size and runs great.
I haven't had any issues with this upper. It runs great and has only had a few FTFs, but I believe that was because of the lower I have. Its size is perfect and it looks awesome. Plus being 9mm its cheap to shoot and will be great when I put a suppressor on it. The only things ive changed on the upper is the muzzle device and the charging handle, rest is all PSA.
August 17, 2018
1 month ago
Even runs my reloaded 147 grain JHP
Quick delivery and excellent fit and finish, shoots 115 grain FMJ and 147 grain JHP cycles fine with no jams, failure to feed or eject. Fit on my TA polymer lower for a compact light pistol build.
July 11, 2018
5 months ago
My Second one
Quality product. Could not find the "Blemish".
July 7, 2018
5 months ago
Mean looking mother
Short, sweet, and lethal!
June 5, 2018
5 months ago
9mm upper
Looks and works good, watch fingers, Thanks Short answers good review, long answers bad review. My answer, short review.
June 4, 2018
5 months ago
Cheap and good
Runs good on Russkie steel cases on a lower with a cheap plastic Colt adapter and an Echo trigger. My cheap mags are the only issue I have had. I run it hard and put it up wet and it keeps on going. Get it.
May 9, 2018
5 months ago
Sweet upper
This is a sweet upper. Just have to be aware of where you put your hands. Great price, great quality.
May 8, 2018
5 months ago
Super fun
Great little upper, very pleased.
May 2, 2018
5 months ago

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