Custom Shop Bed Liner Spray Gun — Variable Nozzle, Built-in Air Regulator, 1L Bottle Fit

This professional-grade spray gun combines a precision-machined aluminum alloy body, a variable nozzle for texture control, and an included air pressure regulator with gauge so you can dial in consistent results. It attaches to standard 1-liter bottles of bed liner coatings and handles other viscous materials like undercoatings, rust-proofers, and chip guards. Built for repeatable performance, the gun locks its nozzle setting to reproduce the same finish across multiple panels or jobs.

How does the variable nozzle control the coating texture?

The adjustable nozzle lets you change the spray pattern and droplet size so the coating lays down with the texture you want, from fine to coarse. Once you find the right setting, a locking mechanism secures the nozzle to deliver the same texture repeatedly without readjusting. This makes it quicker to achieve uniform finishes across large surfaces.

• Turn nozzle to increase or reduce pattern width and texture granularity
• Lock-in setting for consistent repeatable application
• Works with a range of viscosities common to bed liner and undercoating products

What pressure and airflow do I need to operate the gun effectively?

The gun operates best at 40–60 psi with a supply of about 5–6 cfm for smooth, controlled application. A built-in air pressure regulator with a gauge is included so you can set and monitor operating pressure on the fly. The gun is rated to a maximum pressure of 130 psi and connects via a 1/4" NPT air inlet.

• Recommended operating range: 40–60 psi @ 5–6 cfm
• Maximum pressure rating: 130 psi for safety margin
• Standard 1/4" NPT air inlet for common compressor hoses and fittings

Which coatings and bottle formats is the gun compatible with?

This spray gun is designed to mount to standard 1-liter coating bottles, making it a practical choice for widely available bed liner products. Beyond bed liners, it handles heavier coatings including automotive undercoating, chip guards, and rust-preventative materials. Its precise machining and balanced aluminum body help control thicker materials without excessive fatigue.

• Compatible with standard 1-liter bottles of bed liner coatings
• Suitable for undercoating, rust-proofing, chip guard, and similar heavy coatings
• Well-balanced aluminum alloy construction for reduced operator fatigue

How does the build quality affect everyday use and maintenance?

The lightweight, machined aluminum alloy body is corrosion-resistant and balances comfort with durability for frequent use. A built-in gun hanger keeps the tool ready between passes, and the regulator/gauge assembly simplifies setup and reduces guesswork. Routine flushing after each use and occasional inspection of seals will prolong service life.

• Precision-machined components for predictable spray performance
• Lightweight aluminum alloy reduces wrist strain during extended jobs
• Gun hanger and regulator ease workflow and setup repeatability

Who is this for: The Custom Coat Professional Variable Nozzle Bed Liner Spray Application Gun is aimed at body shop technicians, detailers, fleet maintenance teams and serious DIYers who apply textured coatings regularly and need controllable, repeatable results. If you work with 1-liter bed liner containers or apply heavy protective coatings to vehicles, trailers, or industrial parts, this gun provides the pressure control, nozzle adjustability, and rugged build to improve consistency and speed without upgrading to an industrial sprayer.