Proster Pneumatic Rivet Gun 3924LBF — 5 Nozzles (3/32"–1/4"), 3924 lbf Pull Force, 16 mm Stroke

Proster Pneumatic Rivet Gun 3924LBF is a high-force air riveter with five interchangeable nosepieces (3/32"–1/4") that delivers 3924 lbf (1780 kgf) pull strength for rapid, reliable aluminum, iron, and steel riveting.

This compact pneumatic pop rivet tool is built for demanding workshop and field use: aircraft-grade aluminum housing, a 16 mm maximum stroke, a U.S.-spec air inlet, a noise-suppression silencer, and a 3-claw gripping system with spare jaw pieces included. One nosepiece is pre-installed and four additional sizes (1/4", 3/16", 5/32", 1/8", 3/32") let you match rivet diameter to the job. The tool weighs 1.55 kg and includes a mandrel collection bottle for neat cleanup. It also carries Global Recycled Standard (GRS 4.0) certification indicating use of certified recycled materials.

How much pulling power and stroke length does this rivet gun provide?

The Proster 3924LBF delivers 1780 kgf (3924 lbf) of pulling force at 6–8 kg of air pressure, suitable for heavy-duty riveting of aluminum, iron, and standard steel. Its total cylinder stroke is 16 mm, but mandrel breakage occurs after 10 mm of stroke, so longer mandrels may require two pulls.

• Pull force: 1780 kgf / 3924 lbf at recommended air pressure
• Maximum stroke: 16 mm; rivet breaks after 10 mm of stroke
• Air pressure: operates efficiently at 6–8 kg (approx. 85–115 PSI)
• Weight: 1.55 kg for durable yet manageable handling

Which rivet sizes and materials can I use with this Proster riveter?

It ships with five nosepieces to cover common pop rivet diameters from 3/32" to 1/4" so you can tackle bodywork, ducting, trailers, and marine trim. The tool is optimized for aluminum, iron, and standard steel rivets; stainless steel rivets are not recommended for this model.

• Nosepiece sizes included: 1/4" (6.4 mm), 3/16" (4.8 mm), 5/32" (4.0 mm), 1/8" (3.2 mm), 3/32" (2.4 mm)
• Pre-installed nozzle for immediate use out of the box
• Not recommended for stainless steel rivets—use aluminum, iron, or standard steel
• 16 mm stroke handles most rivet lengths; two pulls for 10–16 mm mandrels

What design features improve durability and workflow on the job?

The three-claw, 360° gripping system ensures secure mandrel capture and smooth pulling, while an extra set of jaw pieces reduces downtime by making maintenance quick. Aircraft-grade aluminum construction keeps weight down while the built-in silencer and fast-return cylinder help maintain speed and operator comfort.

• 3-claw jaw design for consistent mandrel grip and long tool life
• Spare jaw pieces included to extend service intervals
• U.S.-spec air inlet and ergonomic design for rapid cylinder return
• Silencer and mandrel collection bottle for quieter, cleaner operation

Who is this tool best suited for? Proster’s 3924LBF air riveter is aimed at professional mechanics, boat builders, HVAC and sheet-metal workers, trailer manufacturers, and serious DIYers who need a dependable, high-force rivet tool that reduces downtime. Its combination of high pulling force, multiple nozzle sizes, spare jaws, and recycled-material construction makes it a practical choice for busy garages, fabrication shops, and marine yards that value both performance and traceable sustainability.