I repaired my DualSense R2 trigger using springs from an old DualShock : r/playstation
For Playstation 5 L2 R2 Trigger Button Metal Spring Replacement R2 L2 Trigger Buttons For Dualsense 5 Ps5 Ds5 Controller - Accessories - AliExpress
For Sony Ps5 Dualsense Button Replacement Set R1 R2 L1 L2 Triggers Face Button For Playstation 5 Wireless Control Repair Part - Accessories - AliExpress
Amazon.com: Accessories Kit Bundle for PS5 Compatible with DualSense Controller, MENEEA Thumb Grips Sticks Joystick + L2 R2 Trigger Extender+D-pad Button for Playstation 5 Controller, Anti-Slip Replacement Parts : Video Games
2 Pack Sony PlayStation 5 DualSense Wireless Controller - Glacier White | Pro-Distributing
Botones De Gatillo L2 R2 Extensores De Silicona Joystick Pulgar Tapas De Agarre Para PS5 Dualsense sfyyuj | Shopee México
R2 and L2 button set DualSense Controller (PlayStation 5) repair - Free guide - SOSav
Amazon.com: Accessories Kit Bundle for PS5 DualSense Controller, 10pcs Spring Trigger + 4pcs Silicone Thumb Grips Joystick Caps + 1pair L2 R2 Trigger Extender for Playstation 5 Controller : Video Games
R2 L2 Dual Trigger Extender Key Enhancement lengthened Button Part for Sony DualSense 5 PS5 Controller Thumbstick Case Accessory|Replacement Parts & Accessories| - AliExpress
Thumb Grips Trigger Kit for PS5 DualSense Wireless Controller, EEEkit Anti Slip Silicone Analog Stick Thumb Grips Set with L2 R2 Trigger Extenders for Playstation 5 Controller - Walmart.com
Spring for PS5 PLAYSTATION 5 Dualsense Controller R2 L2 Trigger Buttons | eBay