Thread adapter 1/2×28 TPI to M13.5×1 LH – Beretta, Walther, S&W handguns


Convert the thread of your Beretta, HS Produkt, Smith & Wesson or Walther pistol with our thread adapter 1/2×28 TPI to M13.5×1 LH. The cheatcode that takes you from the American ½ UNEF, to the most common metric thread in Europe for 9×19 mm.

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SKU: AD-1228-M1351LH Category:

Convert the thread of your Beretta, CZ, or Smith & Wesson pistol

Why use our thread adapter 1/2×28 TPI to M13.5×1 LH ? First, because the thread at the end of a gun barrel can be of different kinds. And it is therefore not always easy to match the one of the weapon and the one of the suppressor.

The most common threads on a handgun are definitely 1/2×28 TPI (also known as ½ UNEF) and M13.5×1 LH. These are 9×19 semi-automatic pistol threads. Our thread converter is intended to be screwed at the end of the barrel to change the standard.

To solve the same type of difficulty with other, less common threads, consult our dedicated handgun configurator!

Compatibilities of the thread adapter 1/2×28 TPI to M13.5×1 LH

At first everything was simple. Americans made ½ UNF threads on their 9mm handguns, and Europeans preferred metric threads for theirs. But today the market tends to standardize for the 1/2×28 TPI, even in Europe.

The 9×19 weapons on which our adapter can be screwed are (non exhaustive list) :

  • Beretta (M9A3, M9A4, APX…)
  • CZ (P07, P09, P10…)
  • FNH (509, 509C)
  • Smith & Wesson M&P line
  • Walther (PPQ M2 Navy, PDP SD…)
  • Springfield Armory / HS Produkt

Note that this is an adapter for handguns. It will therefore only be able to cover 14 mm (0.55″) of male thread. Beware of PPCs (Pistol Caliber Carbine) that can exceed this thread length.

A thread converter made in France

We manufacture this thread adapter 1/2×28 TPI to M13.5×1 LH on the latest generation of CNC machines. Our operators are French and experienced, and therefore used to maintaining a high quality standard in precision machining.

In terms of materials, we use XC38 steel, also known as C35. In addition to its excellent machining capabilities, it reacts very well to hot bluing. Our surface treatment subcontractor, also French, performs the operation.

To facilitate the installation on the weapon, we make an oblique knurling on the external diameter of the part. Each adapter undergoes a rigorous control of its dimensions at each stage of manufacture.

Perfect concentricity for your Beretta, Smith & Wesson or Walther pistol, so you can keep on shooting straight !

Additional information

Weight 45 g
Dimensions 29 × 19,5 mm


Maximum bullet diameter

.354 in (9 mm)

Accessory thread

M13.5×1 LH

Barrel thread

1/2 UNEF (1/2×28 TPI)


Blued steel


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