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BLEM PSA 16" M4 Carbine Length 5.56 NATO 1:7 Nitride Freedom Rifle Kit - 507617B

In stock

Regular Price: $ 499.99

Special Price $ 259.99

Quick Overview

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

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: 507617B
UPC: 507617B
MFR#: 507617B

16" Barrel length
M4 Profile Barrel
Chrome Moly barrel
5.56 Nato Chamber
1 in 7" twist rate
F-Marked Front sight post
A2 Flash Hider
Sling Loop
Standard Hand Guards w/ heat shields
Forged upper receiver
Bolt Carrier Group
Charging Handle 
PSA Freedom Lower build kit


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

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Barrel: 4150V Chrome Moly steel. Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a carbine-length gas system. Barrel is is finished off with a standard handguard, F-Marked gas sight base, and A2 flash hider.

Upper: Forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized, features a forged upper receiver. These uppers are made for us right here in the USA by a mil-spec manufacturer.

Bolt: Full-auto profile bolt carrier group. Milspec Carpenter No. 158® steel bolt. Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec. 8620 steel M-16 profile carrier is chrome lined and phosphate coated.

Lower Build Kit: Includes Classic M4-Style Stock, A2 Pistol grip, Classic Lower Parts Kit and Mil-Spec diameter 6-position buffer tube assembly. Everything you need to finish your stripped lower.


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

SKU: 507617B
SKU 507617B
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: 507617B

Questions and Answers

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Browse 19 questions Browse 19 questions and 67 answers
Is this a army man gun or a marine man gun? I am joining the navy and want a marine guy gun because it is better which one do i get?
nite f on May 18, 2019
BEST ANSWER: It’s actually a Navy Transgender gun, so you’re good to go!
Can this item be ship to California?
Bill P on May 3, 2019
BEST ANSWER: I asked the same question. PSA answered yes.
Does this kit have to be shipped to an FFL since it has a stripped lower?
Kelsey H on May 4, 2019
BEST ANSWER: It does not need to be shipped to an FFL. It includes every piece to assemble the rifle besides a stripped lower (the only item that ever requires an FFL). I suggest buying one of those locally to avoid fees.
What is the difference between chrome moly steel and chrome moly vanadium?
Joel C on May 7, 2019
BEST ANSWER: The Vanadium. You don't need to worry if it is or isn't since it makes no difference in how long the barrel lasts or anything else. Don't let a marketing zombies blow smoke up your rear. The vanadium is added to cut costs in the manufacturing end of things not the qualities of the end product properties. Get a chrome lined or Nitrided barrel, which this is, and you will be OK
Is this a complete M4 rifle when completing the lower?
Rich.Fore on Apr 27, 2018
BEST ANSWER: Yes it is. It’s a very nice rifle. Brownells has a very nice detailed article on how to assemble it. You might want to order an extra set of detents and springs. They can get away very quickly. The first one I assembled took a day. I had to make three trips to get extra detents and springs. The second one I assembled took two hours. Enjoy.
If I want to replace handguard with picatinny mloc type, what other parts would be needed? Can I use existing gas block?
Dima Prok on May 9, 2019
BEST ANSWER: You need the two piece handguard.
Can a low profile gas block work on this kit,and if so do u have to change fore gaurd ?
Chris P on May 8, 2019
BEST ANSWER: You need to buy the low gas block floating handguard kit. Not this one
Never built one before, is it difficult for a first-timer?
MakeANoise on May 8, 2019
BEST ANSWER: Not at all just pull up a YouTube video and it will be a piece of cake
Do these uppers come assembled ?
Charles M on May 9, 2019
BEST ANSWER: Yes the upper comes assembled but you need a stripped lower that will have to be assembled with the supplied LPK
Does this upper come headspaced?
chandler w on Apr 27, 2018
BEST ANSWER: Yes. Ready to go except you always clean a kit or gun first.
Can I put a scope on this gun?
Davie L on Apr 23, 2019
BEST ANSWER: It has a picatinny rail so yes you can. The front site is fixed and could be in the way though. It can actually be removed if you have some know how and replaced with a gas block and floating handrail.
Is this kit already put together?
William C on May 21, 2019
BEST ANSWER: It wouldn’t really be a “kit” if it were, right?
Does this kit have to be shipped to an FFL since it does NOT come with a lower receiver?
Jerry C on May 8, 2019
Do these lower receivers require drilling and machine works?
Carl B on May 4, 2019
BEST ANSWER: Does NOT come with a lower receiver. You provide your stripped lower and assemble it yourself.
Will this come with a magazine?
Steve B on May 22, 2019
Can this ship to Cook County Illinois?
P-mahoney on May 19, 2019
Do y’all ship this to home?
OGSTACK A on May 17, 2019
Does this kit come in OF green?
American on May 11, 2019
E A on May 10, 2019


5.0 / 5.0
20 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I Found the Blemish!
I got a Magnifying glass and spent about 10 min searching. I found a nearly 1mm light spot on the receiver. . If that is what they call a BLEMISH, then Give Me More!!
May 22, 2019
Solid buy
Just got it in, I can't find a blem on it. Will definitely buy from PSA again.
May 20, 2019
You won’t be disappointed!
Very happy with this build. Customer service resolved a small issue, to my advantage. My fourth build with this company and planning another one. Great people to do business with.
May 20, 2019
cant find blem
shipping was about a week got it slapped a lower on it the first mag i had to use forword assist after that no problems runs great
May 18, 2019
BLEM? What BLEM? Great buy and quality upper with LPK!
I bought a couple of these based on the price and can't find any blem on either upper. Fit and function is perfect. Lower kit is complete, separately bagged by part function to simplify installation so you don't have to guess which springs/detents go to what parts group. Long time PSA customer and I highly recommend them.
May 15, 2019
3 weeks ago
My blem was missing T mark's
Other than the T mark's not being there every thing look's very good.I will be using a carry handle sight so it's no big deal.
May 15, 2019
2 weeks ago
Can't be beat for the price.
read reviews and decided to "take a chance" on blemished M4. Kit was perfect - as others have said - can't see blemish. Highly recommend - will by another - soon.
May 13, 2019
Great company
Palmetto's customer service is second to none and was always available for my calls
May 8, 2019
1 year ago
Blem? What blem?!?
The only “blem” I can find is a couple forging marks on the upper. There might be some marks on the barrel too but those might just be from shipping. Another great product from PSA. Got this one in 5 business days. The previous kits I’ve ordered have taken a couple weeks. Can’t say enough good things for the price. It’s possible to piece something for the same cost but it won’t have a nitride barrel or c158 bolt with a chrome lined carrier. If you’re thinking of getting one do it!
May 2, 2019
4 weeks ago
Happy Happy Happy Happy
February 15, 2019
1 year ago

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