Hi Nicholas, no sir, this is classified as a pistol so there is no need to weld the muzzle device.
Stay safe & have a great day!

Hi Nicholas and welcome. This model is not welded and has a Brace instead of a Shoulder Stock which classifies it as a standard Handgun/Pistol and not SBR (Short Barreled Rifle). Cheers, stay safe and enjoy!

it is NOT pinned or welded see *****
The ZPAP M92 features a 10" cold hammer-forged chrome-lined barrel, ensuring longevity and resistance to wear and corrosion. The blued finish adds a traditional look while providing extra protection against the elements. The pistol is equipped with a black polymer pistol grip, offering a comfortable and secure hold during operation. This model includes Krinkov-style adjustable sights for precise aiming, and the ****** threaded barrel with a 26x1.5mm LH thread pattern allows for the ****attachment of various muzzle devices. The SB Tactical TF1913 Brace provides additional stability and control, enhancing accuracy and ease of use. The 1.5mm bulged trunnion receiver further strengthens the construction, ensuring the pistol can withstand rigorous use in demanding conditions.