Is the 9mm Solvent Trap a Standard Size?

Suppose you are like most people, firearm enthusiast or not; the first thing that comes to mind when you hear 9mm is a pistol. The firearm caliber gained popularity for various reasons, but mostly because of its versatility, easy maneuverability, and ease of use. That is why you see these firearms in movies, on beat cops, with Federal agents, at firing ranges; the list is almost inexhaustible. Consequently, it translates into higher demand for 9mm solvent traps to maintain firearms that fire this projectile caliber.

However, when used correctly, the cartridge or caliber does not feature top on the list of things to consider before choosing a solvent trap. A solvent trap collects cleaning solvent as it escapes from the firearm’s barrel after a cleaning session. It is meant to be an efficient method to clean and maintain the health of your firearm. Your attention should be on other parts of the 9mm solvent trap, such as the storage cups, sealed end-caps, threaded end-caps, and other accessories such as the adapter or booster instead. Adapters and boosters are accessories that increase the compatibility of solvent traps with firearms so that a solvent trap can fit into a broader range of barrels.

For example, in 9mm firearms, the 1/2×28 is the most common thread pattern. It is mostly seen in both the pistol caliber carbine (PCC) and the revolver. There are also a few devices with other barrel threads spinning. For example –

  • H&K firearms use the thread pitch of the M13.5×1 LH
  • The M13.5×1 LH thread pitch used for Glock devices
  • Sig Sauer firearms use the M13.5x1LH thread pitch (not including the P320 models running 1/2×28 barrels manufactured in New Hampshire).
  • H&K MP5-N uses the 1/2×30 thread pitch.

From the list above, it is apparent that you cannot depend on the caliber of projectile that your firearm ejects to choose a solvent trap. Even though the 1/2×28 is the most common thread pattern industry-wide, it is not because of its association with 9mm firearms alone. It is also used for .22lr and .223/5.56 NATO chambered firearms. They are some of the most popular calibers available anywhere, hence the popularity of the 1/2×28 threaded end-cap.

Armed with the knowledge of thread patterns, firearm calibers, adapters, and boosters, one can be expected to make a better-informed decision when choosing a solvent trap for their firearm. One would not be wrong to go on a limb and assume that the 1/2×28 thread pattern is the standard thread pattern for solvent traps. Since the thread pattern is most common in 9mm firearms, it would not be wrong to go further on a limb to assume that the 9mm solvent trap is the standard size.

Armory Den solvent trap kits include storage cups, threaded and sealed end-caps, tubes, adapters, boosters, and every other part you need to have a functional 9mm solvent trap for all your cleaning needs. Our list of products continues to grow based on recommendations and comments from our customers for their cleaning and storage needs. Check out our products at