Silverback 13mm Type Spring, 100 Newtons for SRS and TAC-41

Precision APS 13 mm spring designed for SRS and TAC-41 airsoft rifles. It delivers reliable, repeatable power for compatible platforms while staying compact and easy to install.

• APS 13 mm standard compatibility: Conforms to the APS 13 mm standard, intended for a 9 mm outside diameter spring guide to ensure smooth operation in compatible receivers.
• Power and compression length: When compressed to 99 mm, it generates 100 Newtons (+/−5%), providing about 9 kg of force for consistent cycling.
• Compatibility specifics: Fits rifles that follow the APS 13 mm standard, including all SRS variants (excluding the discontinued push bolt version) and all TAC-41 models.
• Finish and identification: Black electrophoresis coating enhances durability and corrosion resistance, while laser marking allows quick identification at a glance.
• Precision and reliability: Engineered to maintain stable performance within the stated tolerance, aiding predictable shot velocity across use cycles.

This spring is designed to upgrade your SRS or TAC-41 with a known power profile, enabling reliable performance without guesswork. Its protective coating and precise markings help with maintenance and field servicing, while its APS 13 mm compatibility ensures straightforward installation in compatible rifles. Ideal for power tuning, routine maintenance, and field readiness, it provides a dependable path to consistent engagement load and cycling behavior.