Ceramic Gun Cleaner & Lubricant: The Complete Cerma C•S•L Care Guide

What this product is: Cerma C•S•L is a cleaning and lubrication product. It is not a firearm, firearm part, ammunition, magazine, or accessory, and it does not modify or enhance the function of any firearm. It is a maintenance chemical — a ceramic cleaner and lubricant for the metal surfaces you already own and maintain.

What is Cerma C•S•L, really?

It's a ceramic cleaner and lubricant — not a coating you bake on, and definitely not a part you bolt to anything. The active ingredient is STM-3® Nano Silicon Carbide (SiC), the same ceramic chemistry Cerma has put on engines and industrial equipment for 15 years. SiC is hard (Mohs 9.5, second only to diamond) and it bonds to metal rather than sitting on top of it like a thin oil that wipes away.

There are two components because the bore and the action need different things. The foam goes on the bore and external surfaces; the grease goes on the moving contact points. Together they leave a low-friction ceramic layer that makes cycling smoother and the next cleaning quicker. Here's the honest part most ceramic products gloss over: the layer persists across cleaning sessions and builds up with continued use — it doesn't wash away every time you clean — but it isn't a permanent, one-and-done coating, and you'll reapply it now and then as part of normal maintenance.

How do you actually use it? The four steps

1. Clean first, the way you normally would. Confirm the firearm is unloaded (above), disassemble per the manual, and clean the bore with your usual protocol. For heavy copper or lead fouling, use a dedicated copper solvent (Sweet's, Wipe-Out, KG-12) or lead solvent / Lead Away cloth first — C•S•L is the finishing step, not a heavy solvent. Wipe surfaces down to remove solvent residue.
2. Apply the foam to the bore and surfaces. Put a small amount on a clean patch or bore brush and run it breech-to-muzzle; a few passes coat the rifling. Then run a dry patch to leave a thin film, not pooled product. Wipe a little onto the slide, frame, and exterior metal for surface protection.
3. Apply the grease to the action points your manual specifies. A thin film from the syringe on slide rails, locking lugs, BCG surfaces, charging handle, action bars, hinge points — only where the manufacturer calls for lubrication. Cycle the action a few times to spread it, then wipe excess. Many trigger groups run dry; leave those alone.
4. Reassemble and function-check. Put it back together per the manual and run an appropriate function check. For first range use, start with familiar ammunition and your normal pre-range verification.

Foam or grease — what goes where?

Short version: foam on the bore and surfaces, grease on the moving parts. Here's the breakdown.

Can you use too much?

Yes — and over-lubrication is one of the most common maintenance mistakes there is. Excess grease attracts dust, lint, and powder fouling, which is exactly what causes malfunctions in dusty or sandy conditions and after extended carry. A premium lubricant doesn't fix over-greasing; it makes it worse if you slather it on. Modern striker-fired pistols especially (Glock, M&P) want very small amounts at very specific points.

Is it safe on Cerakote, nitride, and polymer?

Yes. The carrier is PTFE-free and solvent-free, so there are no petroleum solvents to attack finishes or polymer frames. It won't etch, pit, or discolor any common firearm finish or metal.

How long does it last, and how often do I reapply?

The ceramic layer is built to persist across cleaning sessions rather than wipe away every time, and protection accumulates with repeated applications — many owners find later cleanings get noticeably easier. It is not a permanent, one-time treatment, and we won't put a round count on it because real-world durability depends on your firearm, your round volume, ammunition, and conditions. Treat reapplication as part of routine maintenance: redo it periodically when you clean, and on high-round-count or duty/carry guns, more often.

Does it replace my bore solvent?

No — and we'd rather tell you straight. Cerma C•S•L is light surface cleaning, not a heavy-duty bore solvent. For copper fouling in a hard-used rifle bore, dedicated copper solvents (Sweet's 7.62, Wipe-Out, KG-12) outperform any general-purpose chemistry. For lead in revolver chambers and pistol bores, a dedicated lead solvent or Lead Away cloth works better. C•S•L shines as the final step — applied after solvents have removed the heavy fouling — to lay down the SiC layer and protect the finish. Most people get the best results running it alongside their existing solvent routine, not instead of it.

Does it really boost velocity?

Here's the honest answer: don't buy it expecting that. A few customers have chronographed gains after treating a bore, and one law-enforcement shooter measured roughly 200 fps on a 16" AR-15 and 150 fps on a .40 Sig — but those figures are one person's atypical results under their own methodology, not what you should expect.* Velocity from a lubricant alone depends heavily on bore condition, ammunition, barrel break-in, and how it's measured. The benefits customers report consistently are the ones to count on: smoother cycling, easier cleaning, less fouling, and corrosion protection.

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Frequently asked questions