PSA 10.5" 5.56 NATO Phosphate 1/7 M-lok 9" Upper With MBUS Sight Set, BCG, & CH - 516447163

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PSA 10.5" 5.56 NATO Phosphate 1/7 M-lok 9" Upper With MBUS Sight Set, BCG, & CH - 516447163


Quick Overview

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: 516447163
UPC: 516447163
MFR#: 516447012

Barrel Length: 10.5"
Barrel Profile: A2
Barrel Steel: Chrome Moly Vanadium
Barrel Finish: Nitride
Chrome Lining: No
Muzzle Thread: 1/2-28
Chamber: 5.56 NATO 
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: A3
Handguard Type: M-Lok 9" Free Float Rail
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Includes: Magpul MBUS Sight Set, Black
Overall Length: 19.5"

Add To:

Barrel:  10.5" Chrome Moly vanadium steel, phosphate coated and chambered in 5.56 NATO with a 1 in 7" twist rate.  Carbine-length gas barrel is finished off with a PSA 9" M-Lok Rail, a low profile gas block and an A2 Style 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. 

Bolt: Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is parkerized outside, and chrome lined inside.

Includes: Magpul MBUS Sight Set, Black

SKU: 516447163
SKU 516447163
Brand Palmetto State Armory
Daily Deal N/A
Daily Deal Expires N/A
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SKU: 516447163

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5.0 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
The anchor for my SBR build.
Awesome quality upper. Accurate short barrel. I have been able to put rounds on steel at 300 yards with a red dot. The SBR stamp is in and just waiting to for the stamp to throw my silencer on it.
August 16, 2018
9 months ago
Extremely pleased with the purchase of this particular upper receiver group
My summary says all. Extremely pleased with the purchase of this particular upper receiver group. Far exceeded my expectations. Caught it on one of the daily deals a while back and was hard to ignore for the price at that time. Even if it were moderately priced higher in the future I'd consider purchasing again if I'm in the need for a pistol or SBR upper group.

BCG and CH are standard milspec items nothing to get excited about and a set of Magpul flip up sights included were a nice touch. Obviously wise to pull the carrier out clean up the machine shop oil from the assembly process and lube like any other AR15 before heading out for live firing. Slapped it on to my recently built AR pistol lower and headed out to the range. First outing it ran really well.

I only had a carbine weighted buffer on hand first time out. Upper cycled fine but it is either over gassed or just the shorter barrel length as the recoil felt more stout than I'm used to. Also had a buddy videoing me shooting the upper. At home was able to see where the brass was ejected to. Basically around the 4 to 5 o clock area. The shell deflector also had quite a bit of brass marking all over it. More than usual with my other longer barreled AR uppers.

Picked up an H marked buffer and it runs much smoother now. Brass ejects about 3 o clock and the deflector isn't all covered in brass markings. Accuracy wise was hard to judge at first as I was just running a pistol tube with the foam on the end. I've since added an SB Tactical SOB brace to the tube and at this last range outing the groups shrank significantly. Appears to be very accurate with typical 55 and 62 grain ammo. Again for a really inexpensive pistol or SBR complete upper receiver group in 5.56 this one appears hard to beat. If your reading the review and are in the market for one I hope my information has helped the next potential purchaser out.
November 28, 2017

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