{"product_id":"sigma-300-600mm-f4-sports-low-profile-arca-foot","title":"Sigma 300-600mm F4.0 DG OS Sports Low Profile Arca-Type Foot","description":"\u003c!-- ===================== GRAY BANNER ===================== --\u003e\n\u003cdiv style=\"background:#e5e5e5;padding:12px 15px;margin-bottom:18px;\"\u003e\n\t\u003cstrong\u003eHejnar Photo – SIGFR-003 Low Profile Arca-Swiss Replacement Foot for Sigma 300-600mm F4.0 DG OS\u003c\/strong\u003e\n\u003c\/div\u003e\n\n\u003c!-- ===================== SEO BLOCK (TOP) ===================== --\u003e\n\u003ch1\u003eSigma 300-600mm F4.0 DG OS Sports Low Profile Arca-Type Foot\u003c\/h1\u003e\n\u003cp\u003e\nThe Hejnar Photo SIGFR-003 is a precision-engineered, low-profile Arca-Swiss compatible replacement foot designed specifically for the Sigma 300-600mm F4.0 DG OS lens. This upgrade provides a lower center of gravity for improved stability and handling, while offering a rock-solid Arca-type dovetail with dual integrated stainless steel Quick Detach (QD) sockets for maximum security.\n\u003c\/p\u003e\n\u003chr\u003e\n\n\u003c!-- ===================== QUICK OVERVIEW ===================== --\u003e\n\u003ch2\u003eQuick Overview\u003c\/h2\u003e\n\u003cul\u003e\n\t\u003cli\u003eModel: SIGFR-003 (Low Profile Version)\u003c\/li\u003e\n\t\u003cli\u003eDirect replacement specifically for the Sigma 300-600mm F4.0 DG OS Lens\u003c\/li\u003e\n\t\u003cli\u003eLow Profile Design: Enhances lens balance and reduces bulk on tripod and monopod setups\u003c\/li\u003e\n\t\u003cli\u003eDual QD Sockets: Integrated stainless steel Quick Detach sockets for secure strap mounting\u003c\/li\u003e\n\t\u003cli\u003eDouble-Dovetail Profile: Allows clamping from both the top and bottom surfaces\u003c\/li\u003e\n\t\u003cli\u003eErgonomic Design: Ample clearance for focusing ring access and supports hood reversal for storage\u003c\/li\u003e\n\t\u003cli\u003ePrecision C.N.C. machined from 6061-T6 Aluminum\u003c\/li\u003e\n\t\u003cli\u003eBlack anodized surface for a professional, durable finish\u003c\/li\u003e\n\t\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- ===================== PRODUCT DESCRIPTION ===================== --\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003e\nUpgrade your Sigma super-telephoto workflow with a replacement foot built for precision and stability. The SIGFR-003 provides a native Arca-Swiss foundation, eliminating the need for bulky adapter plates. Its low-profile design brings the lens closer to the center of rotation on gimbal heads, resulting in smoother movements and easier handling in the field.\n\u003c\/p\u003e\n\u003cp\u003e\n\u003cstrong\u003eAdvanced Carrying \u0026amp; Mounting:\u003c\/strong\u003e This foot features a double-dovetail design, allowing you to mount the foot into a head while simultaneously attaching rails or flash brackets to the upper surface. For carrying security, the integrated dual stainless steel QD sockets offer a fail-safe connection for professional straps. The QD system—trusted for decades by NASA, law enforcement, and military agencies—ensures your gear stays secure during transport.\n\u003c\/p\u003e\n\n\u003c!-- ===================== INSTALLATION INSTRUCTIONS ===================== --\u003e\n\u003ch2\u003eSimple Installation\u003c\/h2\u003e\n\u003col\u003e\n\t\u003cli\u003eUse the included M3 hex key to remove the four factory Sigma screws.\u003c\/li\u003e\n\t\u003cli\u003eMount the SIGFR-003 using the four provided high-strength screws.\u003c\/li\u003e\n\t\u003cli\u003e\u003cem\u003ePro Tip: For long-term security, we recommend applying a drop of Loctite 242 (blue) to prevent screw loosening over time.\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003c!-- ===================== SPECIFICATIONS ===================== --\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLens Compatibility:\u003c\/strong\u003e Sigma 300-600mm F4.0 DG OS Sports\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 6061-T6 Aluminum\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Anodized Coat\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQD Sockets:\u003c\/strong\u003e Two (2) Integrated Stainless Steel\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHardware:\u003c\/strong\u003e M3 hex key and four mounting screws included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Hejnar Photo","offers":[{"title":"Default Title","offer_id":67701622833257,"sku":"SIGFR-003","price":75.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/1278\/9353\/files\/SIGFR-003-2.jpg?v=1792111661","url":"https:\/\/www.hejnarphotostore.com\/products\/sigma-300-600mm-f4-sports-low-profile-arca-foot","provider":"Hejnar Photo","version":"1.0","type":"link"}