PSA AR-15 Lower Safe/Fire - 1728

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PSA AR-15 Lower Safe/Fire - 1728

In stock

Regular Price: $ 49.99

Special Price $ 39.99

Quick Overview

Must be 21 or older to purchase.

If you live in California, please read this notice before ordering.

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: 1728
UPC: 1728
MFR#: 1728

Forged Mil-Spec Lower
Made from 7075-T6 Aluminum material
Black Hardcoat Anodize Finish
Multi Caliber
"Safe" & "Fire" marked Fire Selector
High Shelf Lower

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These lowers are made using the most advanced aerospace manufacturing technology to produce the industries finest, forged Mil-Spec lowers. Our receivers are machined on a multimillion dollar, automated, manufacturing system which enables us to produce a product of unequaled quality and value. 

These forged lowers are quality made using material is 7075-T6 and are marked "CAL MULTI" to accommodate most builds.  Finish is Black Hardcoat Anodize per MIL-8625 Type 3 class 2.

Fire selector is marked "Safe" and "Fire".  This is a "high shelf" lower.

California Buyers - stripped lowers are sent to California as "Long Guns" only. 

PLEASE NOTE:  We are not accepting phone orders on this item. Lowers may take up to 10 BUSINESS DAYS to ship from receipt of FFL information.  Please help us help you by ensuring your FFL is sent in as soon as possible.

Please make sure the business name of the FFL you will be using is on your order.

SKU: 1728
SKU 1728
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? No
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 1728

Questions and Answers

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Browse 107 questions Browse 107 questions and 335 answers
How do I purchase a striped lower?
James G on Apr 30, 2018
BEST ANSWER: Put it in your cart, select an FFL to ship to, Pay for the item, contact the FFL to inform them of the shipment, when it arrives at the FFL - fill out the paperwork for transfer - clear the FBI background check - pay the FFL for the transfer - have fun with it
Can you make an AR-9 from this lower?
Ronald on Apr 16, 2018
BEST ANSWER: You COULD using a Colt patterned conversion kit but you would probably be better off using one of PSA's dedicated 9mm lowers in either the Glock or Colt patterns.
PSA Stripped Billet 9mm Glock Lower
PSA Stripped Billet 9mm Glock Lower
PSA 9mm MOE Black lower 7778705
PSA 9mm MOE Black lower 7778705
Since this is a stripped lower this can be shipped to california as an FFL and treated as a long gun?
Ahman M on Jun 10, 2018
BEST ANSWER: It can be shipped to California, however it is put in an ‘other’ category and can only be sold to ages 21+ if that is your concern. It can be built into a long gun, and then an intrafamilial transfer can be done to someone under 21. It is not treated as a long gun until it is built into one.
If this item is in stock at a nearby store, can i purchase it there instead of online?
Daniel B on May 11, 2018
BEST ANSWER: Stores will honor online pricing.
Can Palmetto put name and address on lower for a SBR build?
Alton H on Apr 19, 2018
BEST ANSWER: PSA does not currently offer that service. I would recommend taking the lower receiver to a local trophy shop to get it engraved.
What does high self lower mean?
James G on Apr 30, 2018
BEST ANSWER: A high shelf lower prevents the installation of an auto sear. Some binary triggers will not work with a high shelf lower.
What is the pin size on these lowers?
bentman on May 11, 2018
BEST ANSWER: They are mil-spec lowers meaning that any mil-spec lower parts kit will fit it. The fire group pin holes are .154 if that helps.
Why so much for shipping?
charles k on Apr 10, 2019
BEST ANSWER: You don't get out to the Post Office much, do you? Wait until you find out what the FFL is going to nail you for for filling out that ATF form.
Is this a rifle lower or can it be used for a pistol build?
J R on May 13, 2018
BEST ANSWER: The FFL who transfers this receiver to you should indicate it as 'other' on the ATF transfer form (4473). As an 'other' you can then build it into either a rifle or a pistol. Also, you must be 21 years old or older to purchase a receiver.
Can I use this for my ar pistol build? I don’t want any backlash with the atf I need to be in compliance with pistol
CELL89 on Dec 11, 2018
BEST ANSWER: Yes you can.
Does this lower have a serial number? The picture doesn’t show one. If there’s no SN does it need to ship to an FFL?
Robert J on May 31, 2018
BEST ANSWER: Yes, it has a serial number and must go to an FFL
Do the #1728 lowers have an upper tension screw?
AZHTfreak on May 1, 2018
Will this work with the psa aac300 blackout pistol kit?
Douglas W on Aug 25, 2018
BEST ANSWER: Short answer yes, most all calibers use a standard AR lower like this .223/.556/7.62x39/6.8spc/.450/.458/300black our etc. .308/30-06 and the like will not. This lower will make an excellent base for you 300 build!
can you tell me if these are compatible for this upper? please
Paul D on Feb 12, 2019
PSA AR-15 Lower Safe/Fire - 1728
PSA AR-15 Lower Safe/Fire - 1728
PSA 16
PSA 16" Pistol-Length 300AAC Blackout 1/8 Nitride 13.5" 2A Armament M-Lok Upper - With BCG & CH - 5165449832
PSA AR-15 MOE+ Lower Build Kit - Black - 5165450690
PSA AR-15 MOE+ Lower Build Kit - Black - 5165450690
BEST ANSWER: Absolutely, just like peanut butter and jelly!
Can this be legally use to make a pistol?
Michael T on Sep 3, 2018
BEST ANSWER: Not a legal expert, but they are stamped "multi" so... Yes. I have a pair of these I built, one as rifle, one as pistol. That being said, it's your responsibility to to check your local laws.
Is a ffl required to purchase in store?
Justin S on May 25, 2018
BEST ANSWER: Yes even if you go to the factory you will need to transfer though a FFL
Will this work for the AR pistol?
jack t on Aug 15, 2018
BEST ANSWER: Absolutely, I just finished a pistol build with one.
what is a high shelf lower?what makes it different than say an off the shelf complete s&w ar 15
doug r on Sep 20, 2018
BEST ANSWER: high shelf or low really only makes a difference if you have a registered drop in auto sear . there is a bit more metal but it makes little difference .
Can i use this with the 9mm hybrid uppers from PSA if i used a 9mm lower PSA kit and had a magwell conversion for glock mags?
Block on Nov 8, 2018
BEST ANSWER: Yes, be aware sometimes there are figment issues with conversion kits and require some Gunsmithing> personally I would stay away from conversions and get the correct lower that accepts 9mm Glock magazines. I am a gun store owner and gunsmith, I am giving my opinion from past experiences.
Does the finish on this receiver more closely match the nitride or the phosphate finish?
Jay J on Jul 12, 2018
When this is transferred by an FFL agent, does it count as a long gun or as a pistol? (more than one pistol transferred at a time causes a special multi-purchase notice to be sent to the ATF.... _)
Klaus Lowery on Jun 27, 2019
BEST ANSWER: Most of my FFL'S transferred my strpped lower as other , there is a blank for other , that way you can build either and not worry about it . Most here know to do so ,as the multiple items never had any issues and have done it at least 4 to 5 times
Can this lower be used for a pistol build ?
Doug L on Dec 6, 2018
BEST ANSWER: Technically yes but depending on the state u live in you may have to prove its classified as a pistol
Can this be used for a pistol build? How do I designate it for pistol on the forms?
Robert O on Jul 23, 2018
BEST ANSWER: Yes it can, that's what I used mine for. There is no designation required for building a pistol, just know what can and can't be put onto a pistol when it comes to accessories.
Is this lower compatible with any lower build kit?
Ramon on Jun 9, 2018
BEST ANSWER: Any AR-15 kit , yes
Can this be used for a 300 blackout kit?
James S on Jun 3, 2018
BEST ANSWER: Yep. I did. 300 blk runs on the ar-15 lower. It uses the same guts and magazines. It only requires a different barrel. Same BCG as 5.56 too. You can really make a lower and just switch out uppers.
Can you build a 6.5 grendel with this lower?
Aalvarez2008 on May 16, 2018
BEST ANSWER: I can and have.
Which 11.5” barrel 5.56 PSA upper is recommended for this lower?
Obewan on Nov 26, 2018
BEST ANSWER: Any PSA upper will serve you well, as long as it has the options you desire. i.e. M-Lok or similar, flash suppressor, etc.
What Glock magwell adaptor would work with this lower?
Devon A on Oct 20, 2018
BEST ANSWER: Yes, it is a mil-spec lower and all of the different 9mm magwell adapters are designed to work with mil-spec lowers. The other option is using a Mean Arms Endo Mag.
What’s the smallest size Barrel (upper) can I use on this stripped lower ? Without having to do any extra paper work.
Chris S on Jul 24, 2018
BEST ANSWER: as small as you want to make a pistol, otherwise 16in. for a rifle
Is this lower capable of supporting an 224 valcory caliber?
Roy2015 on Jul 1, 2018
BEST ANSWER: Yes, you have to use a 6.8 mag though as the .224 Val is on the 6.8 SPC case


4.9 / 5.0
877 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Will buy more!!
Arrived fast and in excellent condition. Used some custom parts to finish and topped with PSA 7” upper to make an awesome AR pistol in .556.
July 21, 2019
1 month ago
Solid lowers
P.S.A. lowers are fantastic. I recommend them.
July 21, 2019
1 month ago
Good fit
Good fit and finish. Tight fit to upper
July 20, 2019
1 month ago
The only parts
I only buy PSA parts, quality & dependability for a great price
July 20, 2019
1 year ago
Great Quality
Quality Lower...Mil Spec... Excellent
User submitted image
User submitted image
July 18, 2019
1 month ago
Outstanding build quality for the price.
July 15, 2019
1 month ago
Great lower to start a build!
Parts fit good finish!
July 8, 2019
1 month ago
My Go-To Stripped AR-15 Lowers...
You can't really beat the PSA AR-15 Stripped Lowers. Same quality as stripped lowers costing $100's more. And just like the lowers, ALL of the parts offered at PSA are top-of-the-line. There's really no need to go anywhere else for your future AR-15 or AR-10 builds!!!
July 4, 2019
1 month ago
works excelent
just finished 300 blk build worked excellent tight fit with upper right in spec.
July 3, 2019
1 month ago
Great lowers
These lowers are all i use anymore, i love em.
July 3, 2019
1 month ago

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