Weihrauch Main Spring 2531b

The Weihrauch Main Spring 2531B is a precision replacement mainspring designed to restore the original performance of your Weihrauch HW 50, HW 55, or HW 99S air rifle. As the primary power source of the spring-piston system, the mainspring stores and releases the energy required to drive the piston, ensuring smooth cocking and consistent shot-to-shot performance.

Over time, a mainspring can lose tension due to regular use, resulting in reduced power, lower muzzle velocity, and inconsistent performance. Replacing a worn mainspring helps restore the rifle's original efficiency and firing characteristics. For the best results, it is recommended to inspect or replace the piston seal and breech seal at the same time.

Compatible with:

• Weihrauch HW 50
• Weihrauch HW 55
• Weihrauch HW 99S

Manufactured to precise specifications, the 2531B mainspring provides an accurate fit, excellent durability, and long service life, making it the ideal replacement for maintenance, repairs, or a complete air rifle overhaul.