---
product_id: 10347781
title: "Astro Pneumatic Tool 4538 Economy Air Undercoat Gun"
brand: "ap astro pneumatic tool company"
price: "€ 44.20"
currency: EUR
in_stock: true
reviews_count: 13
category: "Ap Astro Pneumatic Tool Company"
url: https://www.desertcart.gr/products/10347781-astro-pneumatic-tool-4538-economy-air-undercoat-gun
store_origin: GR
region: Greece
---

# Ultra-lightweight at 0.65 lbs Dual tube lengths for versatile reach Quick disassembly for rapid cleaning Astro Pneumatic Tool 4538 Economy Air Undercoat Gun

**Brand:** ap astro pneumatic tool company
**Price:** € 44.20
**Availability:** ✅ In Stock

## Summary

> 🛡️ Protect your ride like a pro—spray smarter, not harder!

## Quick Answers

- **What is this?** Astro Pneumatic Tool 4538 Economy Air Undercoat Gun by ap astro pneumatic tool company
- **How much does it cost?** € 44.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/10347781-astro-pneumatic-tool-4538-economy-air-undercoat-gun)

## Best For

- ap astro pneumatic tool company enthusiasts

## Why This Product

- Trusted ap astro pneumatic tool company brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rapid Cleanup Design:** Quick disassembly lets you spend less time cleaning and more time working.
- • **Lightweight for All-Day Use:** At just 0.65 pounds, it reduces fatigue during extended projects.
- • **Pro-Grade Multi-Application:** Ideal for body shops, marine, fabrication, and industrial use—your all-in-one undercoating solution.
- • **Precision Rust & Stone Protection:** Delivers professional-grade undercoat to shield your vehicle from corrosion and damage.
- • **Versatile Viscosity Compatibility:** Effortlessly sprays all popular undercoat brands, no matter the thickness.

## Overview

The Astro Pneumatic 4538 Economy Air Undercoat Gun is a lightweight, professional-grade tool designed to apply a variety of undercoats, gravel guards, and sound deadeners with ease. Featuring two interchangeable pickup tubes and quick disassembly for fast cleaning, it supports all popular undercoat viscosities and is trusted by body shops and industrial pros alike to deliver durable rust and stone chip protection.

## Description

From the Manufacturer The Astro Pneumatic 4538 Economy Air Undercoat Gun is designed to apply undercoating, gravel guard, liquid bed liners, sound deadeners and gel coats. Range of use includes body shops, fabrication shops, industrial, marine and other professional markets.

Review: Works great for spraying truck bed liner - Used this to spray Rust-Oleum Truck Bed Liner on my hot rod floors, and it worked great at the recommended pressure. Very easy to clean by spraying water out of it to to rinse the system.
Review: Works Great for Fluid Film Application! - I've had this undercoat gun for about a week now, I've done 3 vehicles and 1 ATV with it so far and it has worked great. My undercoating of choice is Fluid Film, and this gun sprays it well. As other reviews have mentioned, I found it sprayed best at about 80 PSI or so, with no thinning of the Fluid Film. The gun comes with two lengths of pickup tubes, one longer one and a shorter one. It would be nice if it came with a longer "barrel" as well to help get into those tight spaces, but at this price I can't complain. I did try to clamp a hose on the barrel to get into those spots, but found it filled up with fluid and then the gun sprayed out of the vent hole on the top of the container. I'll probably do some more experimenting with this, but that's also probably due to the viscosity of the Fluid Film, as it is very thick. As for containers / bottles, this gun does not include one, but again at this price it's to be expected. I had some Zep brand chemical spray bottles laying around that fit, and I think the Home Depot brand bottles are the same so they should fit as well. I think most wide mouth style chemical spray bottles would probably fit. Overall I'm happy with this purchase, it does the job it needs to do, and the tool is well built for only being about $15 bucks. I would buy again, and I look forward to continuing to use this gun.

## Features

- Applies a top quality undercoat to vehicles to fight rust and stone ships
- Applies all popular brands of undercoat in any viscosity
- Unit comes with 2 tubes: 3-1/4-inch Long with 5/16-inch ID and 7-1/4-inch Long with 1/4-inch ID
- Quick disassembly for faster cleanups
- Lightweight Weight 0.65-pound

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003D3N7W4 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #186,992 in Automotive ( See Top 100 in Automotive ) #213 in Body Repair Paint Spray Guns |
| Customer Reviews | 4.5 4.5 out of 5 stars (585) |
| Date First Available | February 20, 2010 |
| Included Components | Item |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 13.8 ounces |
| Item model number | 4538 |
| Manufacturer | Astro Pneumatic Tool |
| Part Number | APT-4538 |
| Product Dimensions | 9 x 5.2 x 2.2 inches |
| Warranty Description | 1 Year |

## Images

![Astro Pneumatic Tool 4538 Economy Air Undercoat Gun - Image 1](https://m.media-amazon.com/images/I/61lls7uvBlL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great for spraying truck bed liner
*by W***. on December 4, 2025*

Used this to spray Rust-Oleum Truck Bed Liner on my hot rod floors, and it worked great at the recommended pressure. Very easy to clean by spraying water out of it to to rinse the system.

### ⭐⭐⭐⭐⭐ Works Great for Fluid Film Application!
*by T***M on September 30, 2020*

I've had this undercoat gun for about a week now, I've done 3 vehicles and 1 ATV with it so far and it has worked great. My undercoating of choice is Fluid Film, and this gun sprays it well. As other reviews have mentioned, I found it sprayed best at about 80 PSI or so, with no thinning of the Fluid Film. The gun comes with two lengths of pickup tubes, one longer one and a shorter one. It would be nice if it came with a longer "barrel" as well to help get into those tight spaces, but at this price I can't complain. I did try to clamp a hose on the barrel to get into those spots, but found it filled up with fluid and then the gun sprayed out of the vent hole on the top of the container. I'll probably do some more experimenting with this, but that's also probably due to the viscosity of the Fluid Film, as it is very thick. As for containers / bottles, this gun does not include one, but again at this price it's to be expected. I had some Zep brand chemical spray bottles laying around that fit, and I think the Home Depot brand bottles are the same so they should fit as well. I think most wide mouth style chemical spray bottles would probably fit. Overall I'm happy with this purchase, it does the job it needs to do, and the tool is well built for only being about $15 bucks. I would buy again, and I look forward to continuing to use this gun.

### ⭐⭐⭐⭐⭐ Bar and Chain Oil Sprayer
*by P***R on September 15, 2024*

To spray bar and chain oil with this: using a camp stove and a pot (I used a burnt pot which will no longer be used in the kitchen), you need to heat up the bar and chain oil in the pot until it starts steaming. Then attache a rubber hose to the bottom of this air sprayer, put the other end into the pot with oil, and you can spray the bar and chain oil with no problem (and no need to mix in diesel, wd 40, or other junk to thin out the bar and chain oil). It works really good as long as the oil is hot. Obviously, wear safety stuff (glasses, good breathing mask, gloves). This sprayer atomizes the oil so you will have atomized oil in the air afterwards for a while. And it's a bit messy. But does a great job coating with bar and chain oil.

## Frequently Bought Together

- Astro Pneumatic Tool 4538 Economy Air Undercoat Gun
- Fluid Film Black Non-Aerosol, Long Lasting Corrosion, Penetrant & Lubricant, Anti-Rust Coating, Protects All Metals in Marine and Undercoating in Automotive & Snow-Handling Vehicles, 1 Gallon
- Fluid Film One Gallon Corrosion Inhibitor Multi Purpose Penetrant and Lubricant

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-23*