The Proshot 20 Ga Chamber Brush is a dedicated firearm maintenance tool designed specifically to clean the breech and chamber area of 20-gauge shotguns. Engineered to address cycling issues such as stuck hulls and extraction failures, this tool scrubs out burned plastic wad residue, lead buildup, and carbon fouling that standard bore brushes often miss. It features an 8-inch rigid stainless steel shaft with a stationary polymer handle, allowing users to apply direct rotational torque rather than following the rifling of the barrel.

Key Features

• Dedicated 20-Gauge Sizing: Sized specifically to match 20-gauge chamber dimensions for complete wall contact and scouring power.
• Fixed Non-Swivel Handle: Rigid handle design does not rotate, enabling manual scrubbing and rotational force against stubborn chamber deposits.
• Durable Construction: Built with a heavy-duty bronze bristle brush, brass core, and a solid steel shaft.
• Standard Threading: Uses industry-standard #5/16-27 shotgun threads and accepts replacement brush heads (model 20C).
• Compact Reach: Features an 8-inch (~20.3 cm) overall working length to easily reach deep into the breech of semi-automatic and pump-action actions.

Specifications

• Calibre/Gauge: 20-gauge
• Thread Interface: #5/16-27 American shotgun thread
• Shaft Length: 8 inches (~20.3 cm)
• Brush Material: Heavy-duty bronze bristles with brass core
• Handle Type: Fixed / non-swivelling polymer handle
• Product Weight: Approximately 0.05 lbs (~23 g)
• Operation: Manual / mechanical

Who is the Proshot 20 Ga Chamber Brush for?

• High-volume 20-gauge clay target competitors — Requiring frequent removal of plastic wad fouling and carbon buildup in 20-gauge chambers, this chamber brush connects via standard #5/16-27 threads to scrub the breech and prevent extraction jams during extended shooting sessions.
• 20-gauge waterfowl and upland bird hunters maintaining semi-automatic or pump-action shotguns — Requiring an 8-inch reach to access deep action breeches, this 20-gauge chamber brush provides the direct rotational scrubbing torque needed to keep cycling mechanisms reliable in the field.

Less suitable for: Firearm owners seeking to clean 12-gauge, 28-gauge, or .410 bore chambers, which require gauge-specific chamber brushes (such as model CH12 or 12C for 12-gauge), or those needing to clean the full length of a shotgun bore, which requires a standard full-length cleaning rod rather than an 8-inch chamber tool.