{"product_id":"lantac-ultimate-forward-assist-1","title":"LANTAC ULTIMATE FORWARD ASSIST","description":"Lantac UFA-S Ultimate Forward Assist (Solid). - The UFA-S is precision swiss lathe turned \u0026amp; manufactured from certified 4140 Cr-Mo steel giving improvements to strength corrosion resistance and durability over the original materials. - Parts are all heat treated to 48-52 Rc (Rockwell C). - In addition all parts are QPQ (Quench Polish Quench) Nitrided for improved corrosion resistance and enhanced lifespan. - The main Plunger spring is manufactured with the improvement of Stainless 316 music wire (as per ASTM A313) for enhanced corrosion resistance. - Closed end coils are also used rather than the original open ends for improved seating and alignment. Springs are stress relieved and air cooled. - The Plunger Detent Spring is improved and manufactured from Zinc plated music wire (as per ASTM A288) for enhanced corrosion resistance. - Springs are all stress relieved as per the mil specification. - The assembly is retained within the upper receiver with an improved spiral design pin as opposed to a slotted version for increased strength and durability. Pins are fully certified by the manufacturer. - The design of the Cap has been improved by reducing its diameter and snagging potential creating a more streamline surface flow when assembled into the upper receiver.  - Exterior surface knurling around the caps edge allows for positive engagement with a gloved or naked hand while removing the circular ridge that exists on the current design.  - Weight of the assembly has also been improved to 20.227g (.7135oz) from 22.481g (.7930oz).  - All outer details are bead blasted to create a satin reduced reflectivity surface prior to finishing. - Manufactured in the USA from USA sourced materials and finishes.","brand":"LANTAC USA LLC","offers":[{"title":"Default Title","offer_id":46198229565579,"sku":"LANTAC 01UPUFAS","price":38.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/8581\/8251\/files\/taktactical-placeholder-coming-soon_6871cbc7-c7cf-4357-b49f-f42d6f382981.png?v=1780683231","url":"https:\/\/taktactical.com\/products\/lantac-ultimate-forward-assist-1","provider":"Taktactical.com","version":"1.0","type":"link"}