{"product_id":"sg1-90-progressive-reset-trigger-prt-for-f-n-ps90","title":"SG1-90 Progressive Reset Trigger (PRT) for F\u0026N PS90 (Pre-Order, ships 9\/18\/26)","description":"\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSG1-90\u003c\/strong\u003e is a purpose-built cross progressive reset trigger system \u003cstrong\u003eby McClane Defense Co\u003c\/strong\u003e exclusively for the \u003cstrong\u003eFN PS90\u003c\/strong\u003e platform. Utilizing proprietary internal geometry and design, the \u003cstrong\u003eSG1-90\u003c\/strong\u003e replaces key factory fire-control components and adds a dedicated reset component to enable a true \u003cstrong\u003e3-position selector\u003c\/strong\u003e configuration: Safe, Semi, and Forced Reset. This system allows the shooter to select standard semi-automatic operation or semi-automatic operation with a progressive forced-reset mechanism, enabling \u003cstrong\u003eexceptional trigger pull speed\u003c\/strong\u003e while maintaining full control, consistent ergonomics, and one trigger pull per round fired.\u003c\/p\u003e\n\u003ch3\u003e3-Position Selector: Safe (S) \/ Semi (1) \/ Forced Reset (F)\u003c\/h3\u003e\n\u003cp\u003eThe SG1-90 utilizes a proprietary 3-position selector engineered specifically for the PS90 platform:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe (S)\u003c\/strong\u003e — Mechanical safety blocks trigger movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSemi (1)\u003c\/strong\u003e — Standard PS90 semi-automatic operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForced Reset (F) \u003c\/strong\u003e— Progressive reset functionality is available when the trigger is pulled fully through the activation range. Partial trigger pulls in this position behave as standard semi-automatic fire.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSemi-Automatic Operation with Selectable Forced Reset\u003c\/h3\u003e\n\u003cp\u003eThe SG1-90 is engineered around the PS90’s unique fire-control geometry to deliver predictable performance across selector positions:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard semi-automatic operation\u003c\/strong\u003e — Conventional trigger function with one pull per shot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForced-reset operation\u003c\/strong\u003e — The trigger is mechanically driven forward after each shot when fully actuated, allowing faster follow-up shots while still requiring a separate pull for each round fired.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIncluded Components \u0026amp; Materials\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement hammer\u003c\/strong\u003e — Replaces the factory polymer hammer; heat treated and nitrided.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement out-of-battery sear\u003c\/strong\u003e — Replaces the factory polymer sear; heat treated and nitrided.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e 3-position selector\u003c\/strong\u003e — Hard anodized; replaces the factory polymer 2-position selector.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ereset component\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOver travel limiter\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eInstallation jig\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eThe SG1-90 comes in 2 materials:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 255, 0);\"\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003e17-4 PH steel:\u003c\/span\u003e This kits comes with  replacement hammer, Replacement out of battery sear. Polymer 3-position selector, reset component, over travel limter, and installation jig\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline; color: rgb(128, 255, 0);\"\u003e\u003cstrong\u003ePA12-CF: This kits comes with  replacement hammer, Polymer 3-position selector, reset component, over travel limiter, and installation jig. You would  use your OEM out of battery sear with this kit.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAll 17-4 stainless components are heat treated for durability, wear resistance, and long-term consistency.\u003c\/p\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFN PS90 only\u003c\/strong\u003e with a factory-configured semi-automatic trigger pack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible\u003c\/strong\u003e with full-auto trigger packs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible\u003c\/strong\u003e with aftermarket or modified fire-control components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot compatible\u003c\/strong\u003e with any other firearm platforms.\u003c\/li\u003e\n\u003cli\u003eCompatible with all PS90 barrel lengths, including \u003cstrong\u003e16\" barrels and SBR configurations\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eFirearm Modification Notice\u003c\/h3\u003e\n\u003cp\u003eInstallation of the SG1-90 modifies the firearm's original fire control system and may affect the firearm's safety, reliability, performance, function, handling characteristics, or legal classification. By purchasing, installing, or using SG1- 90, you acknowledge these risks, assume full responsibility for any consequences arising from such modification, and are solely responsible for ensuring the firearm is properly installed, functions safely, and remains compliant with all applicable federal, state, and local laws.\u003c\/p\u003e\n\u003ch3\u003eOperating Limitation\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDRY FIRE NOT RECOMMENDED\u003c\/strong\u003e; repeated trigger cycling without a cartridge or snap cap can cause damage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e⚠ WARNING:\u003c\/strong\u003e Rapid, sustained fire can cause excessive barrel and chamber heat, increasing the risk of heat-related discharge (cook-off). Allow cooling between magazines. Never leave a round chambered when not actively firing. Follow all standard firearm safety practices.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eInstallation videos in our instructions and tutorials page\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"McClane Defense Co","offers":[{"title":"17-4 PH Steel","offer_id":46615792877647,"sku":null,"price":219.99,"currency_code":"USD","in_stock":false},{"title":"Carbon Fiber Nylon","offer_id":46615792910415,"sku":null,"price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0648\/2558\/9839\/files\/ScreenShot2026-09-01at9.01.53PM.png?v=1788482371","url":"https:\/\/mcclanedefense.com\/products\/sg1-90-progressive-reset-trigger-prt-for-f-n-ps90","provider":"McClane Defense Co","version":"1.0","type":"link"}