{"product_id":"utg-pro-mil-6-pos-rcvr-ext-tube-blk","title":"UTG PRO MIL 6-Position Receiver Extension Tube – AR-15\/M4 Compatible","description":"\u003cp\u003eThe UTG PRO MIL 6-Position Receiver Extension Tube provides a mil-spec platform for adjustable stock systems on AR-15 and M4-pattern rifles. Precision-machined with six indexed positions, this extension tube allows shooters to customize length of pull for different shooting positions, body armor, or multiple users while maintaining consistent cheek weld and sight alignment.\u003c\/p\u003e\u003cp\u003eManufactured from 7075-T6 aluminum with a hard-anodized black finish for corrosion resistance and durability. Features standard mil-spec diameter (1.14\") for compatibility with mil-spec buffer tubes and stocks. Includes castle nut and lock plate for secure installation. Threading accepts standard carbine buffer and spring assemblies.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Receiver Extension Tube (Buffer Tube)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15, M4, and mil-spec AR platforms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 7075-T6 Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Hard-anodized Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable:\u003c\/strong\u003e Yes – 6 positions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Requires armorer's wrench and basic gunsmithing knowledge; includes castle nut and lock plate\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Leapers, Inc. - UTG","offers":[{"title":"Default Title","offer_id":47938840854783,"sku":"UTGTLU001","price":21.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1297353.jpg?v=1766534328","url":"https:\/\/doublestackstore.com\/products\/utg-pro-mil-6-pos-rcvr-ext-tube-blk","provider":"Double Stack Store","version":"1.0","type":"link"}