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PDI Custom S&T USMC M40A3 Bolt Action Airsoft Sniper Rifle w/ PDI Internals (Model: Desert)

ID: 55431 (SR-M40A3-TN)
4.6 stars, based on 17 reviews
PDI Custom S&T USMC M40A3 Bolt Action Airsoft Sniper Rifle w/ PDI Internals (Model: Desert)
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Optic and bipod shown in images not included
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Canada Export CompliantCanadaExport Compliant
This gun has a muzzle velocity rating (FPS) between 366 and 500, and is compliant for export to Canada.


  • High quality nylon fiber reinforced polymer stock
  • High power stainless steel cylinder withstands the use ofhigh power upgrades. Designed by PDI Engineering in Japan
  • Full metal aluminum alloy barrel, trigger, and bolt assembly
  • Textured stock for improved grip; Rubberized butt pad; Adjustable cheek riser
  • New PDI type spring powered sniper rifle system (Compatible with Angel Custom VSR-10 springs and spring guides); Smooth, high power spring action shoots up to 430+ FPS
  • PDI type steel trigger sear pre-installed
  • Harris style bipod lug (bipod sold separately)
  • Smooth bolt and trigger pulls

FPS: 430

The S&T M40A3 is a collaboration between S&T and PDI Japan with a goal to create the highest value and performance on an Airsoft sniper rifle. Completely designed by the top designers and engineers from PDI Japan, the S&T M40A3 is equipped with stainless steel internal parts including a true stainless steel cylinder and steel sear that can withstand high power upgrades.

The M40, known for its years of service in the hands of US Marine Snipers, began its life as a modified military type-classified version of the M700 bolt action rifle. Through the years the M40 has seen various changes and upgrades to enhance its durability, reliability, as well as reduce its overall weight. Entering service in the early 2000's, the M40A3 with its lightened fiberglass stock has proven to be an incredibly robust, reliable, and accurate rifle.
The S&T M40A3 is a faithful replica of the USMC M40A3 with an internal built to dominate the Airsoft battle field. Taking the extra step, the S&T M40A3 is equipped out of the box with a PDI type internal system and 90 degree steel trigger sear. With over $150 value of upgraded internal parts already installed, this rifle is capable of operating at much higher FPS with just the change of a spring.

Length: 1130mm
Inner Barrel: 455mm
Weight: 3234g
Magazine Capacity: 30rds
Muzzle Velocity: 410~430 (Measured with 0.20g BBs)
Fire Modes: Single shot, safety
System: PDI type High Power Spring System / VSR-10 compatible
Package Includes: Gun, Magazine, Manual
Hopup: Yes, Adjustable

Manufacturer: 6MM ProShop (USA Distribution) S&T (OEM)

About S&T

S&T is a group of Airsoft enthusiasts that produces rifles and parts based on the trends in the Airsoft industry. Their mission is to supply a wide range of quality products with the most competitive pricing for dealers and consumers alike. S&T was founded in 2009 with their HQ office located in Hong Kong, a subsidiary office in Japan, as well as Airsoft / Airgun manufacturing facilities in China.

About 6mmProShop

Established in 2011, 6mmProShop Inc. is a USA based manufacturer and distributor with a mission to bring law enforcement training, Airsoft sporting events, and military simulation to the next level. 6mmProShop features exclusive licensed products, unique innovations, and distribution rights of many exciting products from Japan, Europe, South America, and Asia. With headquarters located in the USA, 6mmProShop offers unmatched product support, inventory availability for resellers, and worldwide exclusive products!

17 Customer Reviews

(Write a review)

by Vera M. on 05/04/2019

Amazing For The Price
VSR Compatible
Heavy (For Realism)
Adjustable Hop-Up
Nice Externals


Mags Are Not The Best (But Still Work Decently)
by Jackie P. on 02/12/2018
"First let me say...
Holy crap this gun is way good for the price and no upgrades!
I would say it's an awesome beginner gun!
Now to the review!
first let's do pros and cons starting with pro's
-Very good material
-amazing fps with the 500fps spring and 32g bbs I would suggest heaver though!
-easy to take apart and clean.
-compatible with most vsr 10 mechanics!

Okay now some cons.
-Stock is not flush with the gun, it moves up and down but that can be fixed with camo tape or just normal tape
-mags are a little big. could be pro
-hopup can get in the way of your bolt pull and push you just have to tighten them an you should be fine.

And well there you go
personally I love this gun you should defiantly buy if this is going to be your first sniper rifle!
At first It looked huge and heavy but if you use it enough you'll forget about it.
and there you go A review on the PDI Custom S&T usmc M40A3!
by Westen A. on 06/15/2017
"Hello everybody, I am here to tell you guys all about this gun. Actually, I will give you pros and cons.

Pros: This gun is full metal except for the stock, Orange
Tip, and magazine.
This gun comes with a speed loader, a mag, a
Dejamming rod, a few manuals, and the gun with
Some tools.
This gun has some VSR 10 compatible parts.(I
Don't know exactly what but there is a review
That tells you)
The gun has unfathomable range and accuracy.
The packaging is nice.
The hop up is kind off weird to adjust, but once
You get it to where you want it, it's set.
The mag holds about 25-30 rounds.

Cons: The hop up is weird to adjust. All you do is
Pull the bolt back and don't push It forward,
Take out the mag, there will be 2 holes. Take the
Smallest Allen key and tighten or loosen them
Equally. (Tighten to less, loosen for more hop)
Also, out of the box, the outer barrel wobbles a
Little bit. It dint bother me, I just threw
Some electrical tape on it and it was fine.
The barrel is not threaded sadly.

Anyway, those are the pros and cons. I however did send mine back because I'm just not a sniper. I thought I was, but nah. I'm now getting the Ares AM-013.
It just was not my style. However if your a hardcore sniper on a 220 dollar budget, look no further. THX Evike.

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