PSA AR-15 Pistol Buffer Tube Kit - 40433

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PSA AR-15 Pistol Buffer Tube Kit - 40433


Quick Overview

SKU: 40433
UPC: 40433
MFR#: 40433
PSA AR-15 Pistol Buffer Tube Kit

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Pistol Buffer Kit Includes the following:

PSA AR-15 Pistol Buffer Tube

PSA Sling Mount Latch Plate

PSA Carbine Spring

PSA Carbine Buffer


 7075 aluminum tube is fluted and then hard anodized coated. Some gunsmithing required to install standard mil-spec latch plate.

SKU: 40433
SKU 40433
Brand Palmetto State Armory
Daily Deal N/A
Daily Deal Expires N/A
Youtube Video N/A
Free Shipping? N/A
SKU: 40433

Questions and Answers

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Browse 7 questions Browse 7 questions and 23 answers
Does this require a castle nut separaly?
Mike H on May 7, 2018
BEST ANSWER: NO it does not
Does this work for a 300 black out pistol build with an 8.5" barrel?
Six R on May 3, 2018
BEST ANSWER: Yes it does. Have mine on a 300 blk with a 10.5 barrel.
Does this work with an AR-15 pistol build with a 556 7.5" barrel?
Six R on May 3, 2018
BEST ANSWER: Yeah that's what i used it on is a 7.5
How long is the pistol buffer tube?
Earl B on May 1, 2018
BEST ANSWER: Overall length approximately 7.5"
Will this kit acomadate a shockwave blade?
John P on Jul 18, 2018
BEST ANSWER: I personally don’t own a shockwave blade but from my understanding it will fit. I would caution using this if your shockwave installs using one hexscrew, metal on metal, as it could damage this buffer tube. If it’s the compression mounting kind then I’d say you’ll have no issues. Hope this helps
what is the outside diameter of this tube?
jim h on Jun 14, 2018
BEST ANSWER: The tube I received was smooth not fluted as pictured and with a knurled ring the outside diameter is 1.170".
What is the weight of the buffer?
Kevin B on Oct 22, 2018


4.5 / 5.0
19 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
AR-15 Pistol Buffer Tube Assembly
I wanted simplicity At a great price so I bought this. After firing the 300 black out pistol I felt I did need a blade at the end. I have it back ordered.
User submitted image
User submitted image
August 19, 2018
3 months ago
First pistol build.
I have not installed it yet. I'm gathering parts for my very first pistol build. Definitely a quality product.
August 18, 2018
3 months ago
Nice quality tube, good spring!
August 8, 2018
5 months ago
Not as described
The buffer tube that came wasn’t fluted. Tried contacting PSA never got a return email.
July 30, 2018
5 months ago
Response from Palmetto State Armory
We searched our email server and couldn't find your correspondence. Please contact us at so we may try to correct this issue.
July 31, 2018
Casey S
It's perfect for the application. My 556 pistol is awesome.
July 13, 2018
5 months ago
Great value for the quality
Great quality fit and finish is nice would recommend
July 2, 2018
5 months ago
Great product, the fluted shafts is also neat.
June 21, 2018
1 year ago
Great fit and price
I got it for my Anderson build shipping was fast as always the fit is perfect my only complaint is the color. It's not black so it doesn't match my pistol but I still like it. Just bought a shockwave to stabilize it and to the range I go when it comes
June 22, 2017
not great
Bought this to build a poly lower and the bolt plunger got stuck right off the bat. The buffer tube will not reach the buffer retainer to hold it in place! Not by a little bit either it needs several more turns to make it. Not a happy camper right now.
February 19, 2017
Great buy
Great product was skeptical at first with kit not having castle nut but I've put a couple hundred rounds down range great buy on sale!
February 9, 2017

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