Birchwood Casey 13322 Perma Blue Paste Gun Blue 2 oz Squeeze Tube

The Birchwood Casey Perma Blue Paste Gun Blue is a slow-acting, paste-form gun blueing compound designed to lay down a deep, wear-resistant blue-black finish on steel firearms and parts. Supplied in a convenient 2 oz squeeze tube (MPN 13322), this formula reacts gradually with the metal to build up a denser, more even finish than fast-acting liquid blues, making it the longest-lasting option in the Perma Blue line for both touch-up work and complete reblueing projects.

Perma Blue Paste is intended for use on thoroughly cleaned, rust-free steel surfaces (not stainless) and is well suited to spot repair on worn edges, holster wear marks, and small parts, as well as full refinishing of vintage and well-used firearms. The paste consistency allows precise application without the runs and drips common to liquid blues, so hobbyists and gunsmiths can lay down a non-streaky, uniform blue-black finish on everything from receivers and frames to screws and small components.

A staple of the gunsmith's bench and home workshop, Birchwood Casey has been a trusted name in firearm finishing and gunsmithing supplies for decades. Whether you are refreshing a heirloom, blending a repair on a carry gun, or prepping a barreled action for a full refinish, this 2 oz tube of Perma Blue Paste delivers the slow-reacting, durable blue-black finish that gun owners have relied on for reblueing and restoration.