Graco 288421 Contractor Airless Spray Gun

The Graco 288421 Contractor Airless Spray Gun is a rugged 2-finger gun for pro use, rated to 3600 psi with a standard 1/4" NPSM inlet and includes a RAC 5 517 tip & guard.

Max pressure: 3600 psi
Inlet thread: 1/4" NPSM
Includes: RAC 5 517 tip + guard
Fits most: Ultra 395/495/595, Ultra Max II 490–1595, ST Max, GMAX II 3900/5900/7900, Mark IV/V/VII/X

List Price: $470

You save: $183.3 (39.00%)

Sale Price: $286.7

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Description

Overview & Key Benefits

The Graco 288421 Contractor Airless Spray Gun is a pro-grade, 2-finger gun designed for daily jobsite use. It ships with a RAC 5 517 SwitchTip & Guard, features a durable enclosed FlexSeal needle design for long life, and is rated to 3600 psi with a standard 1/4" NPSM inlet.

Compatible Machines

Works with most Graco professional airless sprayers that use a 1/4" gun connection and operate at ≤3600 psi. Popular families include:

Ultra 395 / 495 / 595 (electric)
Ultra Max II 490 / 495 / 595 / 695 / 795 / 1095 / 1595 (electric)
ST Max series (electric)
GMAX II 3900 / 5900 / 7900 (gas)
Mark IV / V / VII / X ProContractor (texture/paint, ≤3300 psi)

Fit-check rule of thumb: if your sprayer’s max pressure is ≤ 3600 psi and the hose/gun thread is 1/4" NPSM, this gun will fit.

Key Specifications

Part Number	288421
Gun Series	Contractor (airless)
Max Fluid Pressure	3600 psi (24.8 MPa)
Inlet	1/4" NPSM with EasyGlide-style swivel
Trigger	2-finger, locking safety
Included Tip & Guard	RAC 5 517 SwitchTip + HandTite Guard
Filter	Internal gun filter (Easy Out style)
Approx. Weight	~22 oz (gun only)

What’s Included

Contractor Airless Spray Gun (2-finger)
RAC 5 517 SwitchTip
HandTite RAC 5 tip guard
Internal gun filter installed

Notes & Fit Guidance

Use with standard airless hoses and sprayers rated ≤ 3600 psi.
Verify your hose end is 1/4" NPSM (most pro Graco rigs are).
For heavy-texture rigs running >3300 psi, confirm operating pressure before use.

Frequently Asked Questions

If your sprayer’s max working pressure is ≤ 3600 psi and your hose/gun thread is 1/4" NPSM, this gun is compatible with most Ultra, Ultra Max II, ST Max, GMAX II, and Mark series units.

The gun ships with a RAC 5 517 SwitchTip and HandTite RAC 5 guard pre-included.

Rated to 3600 psi with a 1/4" NPSM inlet. This is the standard for most pro airless rigs and hoses.

Yes—an internal gun filter (Easy Out style) is included to reduce tip clogs and improve finish quality.