{"product_id":"eratac-klappkorn-hk-style-1-8mm-front-sight","title":"ERATAC Folding Front Sight HK-Style 1.8mm \/ front sight","description":"\u003cstyle\u003e\n.br-product{font-family:Arial,Helvetica,sans-serif;line-height:1.6;color:#222;}\n.br-product h2{font-size:1.2rem;margin-top:28px;}\n.br-product ul{padding-left:18px;}\n.br-product .info-box{background:#ffdddd;border-left:6px solid #c40000;padding:12px;margin:20px 0;}\n.br-product .tip-box{background:#eef6ff;border-left:6px solid #2a6fdb;padding:12px;margin:20px 0;}\n.br-product .trust-box{background:#eaf7ea;border-left:6px solid #2f8f2f;padding:12px;margin:20px 0;}\n.br-product .compare-box{background:#f5f5f5;border-left:6px solid #444;padding:12px;margin:20px 0;}\n.br-product details{background:#f2f2f2;padding:10px;margin-bottom:8px;border-radius:4px;}\n.br-product summary{font-weight:600;cursor:pointer;}\n\u003c\/style\u003e\n\n\u003cdiv class=\"br-product\"\u003e\n\n\u003ch2\u003eERATAC Folding Front Sight HK-Style 1.8 mm \/ Front Sight – Foldable Front Sight for Picatinny Backup Sights\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eA mechanical backup sight is only useful if the sight post width, height, and rear sight match the setup.\u003c\/strong\u003e\u003cbr\u003e\nThe ERATAC Folding Front Sight HK-Style 1.8 mm \/ Front Sight is the front folding sight for an ERATAC\/Picatinny backup sight with a 1.8 mm sight post width.\u003c\/p\u003e\n\n\u003cp\u003eIt is not a complete sight set. You need a suitable folding rear sight and a suitable Picatinny rail. The HK-Style version changes the sight picture and protective geometry of the front sight compared to the standard version.\u003c\/p\u003e\n\n\u003cdiv class=\"info-box\"\u003e\n\u003cstrong\u003eImportant note for classification:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\nThis product is only the \u003cstrong\u003eFront Sight \/ Folding Front Sight\u003c\/strong\u003e. Without a suitable rear sight, you do not have a complete mechanical sighting system. Before purchasing, check: Picatinny rail, sight line height, sight post width, standard or HK-Style, existing folding sight, co-witness planning, optic height, and intended use.\n\u003c\/div\u003e\n\n\u003cdiv class=\"trust-box\"\u003e\n\u003cstrong\u003eWhat makes this product technically special:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\n✔ \u003cstrong\u003e1.8 mm Sight Post Width:\u003c\/strong\u003e wider, faster to acquire, and good for robust backup sight logic, but obscures more of the target at a distance than 1.35 mm\u003cbr\u003e\n✔ \u003cstrong\u003eFoldable Design:\u003c\/strong\u003e stays flat on the system when not in use and does not permanently obstruct the field of view.\u003cbr\u003e\n✔ \u003cstrong\u003eAR15-like Sight Line Logic:\u003c\/strong\u003e useful if backup sights need to match common AR heights.\u003cbr\u003e\n✔ \u003cstrong\u003eTool-free Height Adjustment of the Sight Post:\u003c\/strong\u003e facilitates zeroing of the mechanical sight.\u003cbr\u003e\n✔ \u003cstrong\u003ePicatinny Base:\u003c\/strong\u003e clean mounting on compatible MIL-STD-1913 rails.\n\u003c\/div\u003e\n\n\u003ch2\u003eWhy this product?\u003c\/h2\u003e\n\n\u003cp\u003eElectronic optics are fast, but a mechanical reserve can be useful on training, service, or competition weapons. The crucial point is that the reserve sight is not just mounted but also properly set up.\u003c\/p\u003e\n\n\u003cp\u003eThis folding front sight is the front part of the system. The 1.8 mm sight post width influences how fine or fast the sight post works in the sight picture. The HK-Style version changes the sight picture and protective geometry of the front sight compared to the standard version.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Reserve:\u003c\/strong\u003e helps when red dot, battery, or glass no longer provide a usable target reference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlat Storage:\u003c\/strong\u003e when folded, the sight remains inconspicuous and interferes less with primary optics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsciously Choose Sight Post Width:\u003c\/strong\u003e a wider sight post is faster to acquire, a narrower one can aim more precisely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean Front Sight Base:\u003c\/strong\u003e instead of improvised individual parts, a reproducible BUIS setup is created.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"tip-box\"\u003e\n\u003cstrong\u003eInstructor Tip: Really Zero Your Backup Sights\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\nBackup sights are often mounted and never zeroed. Then they are just decorative. After mounting, always zero them with the ammunition you actually use.\u003cbr\u003e\u003cbr\u003e\nCheck the sight line with your main optic. With very low or very long optic setups, even a flat folding front sight can interfere in the wrong place.\u003cbr\u003e\u003cbr\u003e\nConsciously raise and lower the sight during training. Otherwise, under stress, you won't notice if it moves freely or hits an optic, light, cable, or cover.\n\u003c\/div\u003e\n\n\u003ch2\u003eOur Assessment\u003c\/h2\u003e\n\n\u003cp\u003eThe ERATAC Folding Front Sight HK-Style 1.8 mm \/ Front Sight is useful if you want to cleanly build a mechanical backup sight on a Picatinny base. It is not a replacement for a main optic but a reserve and training option.\u003c\/p\u003e\n\n\u003cp\u003eThe limit is clear: A front sight purchased alone does not provide a complete sighting system. You need a suitable rear sight, a suitable mounting position, and a cleanly zeroed sight line.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAR and Picatinny platforms with a backup sight concept\u003c\/li\u003e\n\u003cli\u003eRange and training weapons with red dot or LPVO\u003c\/li\u003e\n\u003cli\u003eUsers who consciously train with mechanical reserve sights\u003c\/li\u003e\n\u003cli\u003eSetups where a flat, foldable front sight is needed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eLess suitable for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWeapons without a Picatinny rail\u003c\/li\u003e\n\u003cli\u003eUsers expecting a complete BUIS set\u003c\/li\u003e\n\u003cli\u003eSetups without a suitable rear sight\u003c\/li\u003e\n\u003cli\u003eSetups where the primary optic blocks the sight line\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"compare-box\"\u003e\n\u003cstrong\u003eDirect Classification:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\n✔ \u003cstrong\u003e1.8 mm Folding Front Sight:\u003c\/strong\u003e conscious choice of sight post width for sight picture, speed, and precision.\u003cbr\u003e\n✔ \u003cstrong\u003eComplete BUIS Set:\u003c\/strong\u003e easier if you want to buy front and rear sights as a matching set.\u003cbr\u003e\n✔ \u003cstrong\u003eRed Dot alone:\u003c\/strong\u003e faster and simpler in normal operation, but without mechanical reserve.\u003cbr\u003e\u003cbr\u003e\nThis folding front sight is worthwhile if you specifically need the front component for an existing or planned ERATAC backup sight setup.\n\u003c\/div\u003e\n\n\u003ch2\u003eApplication Scenarios\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackup Sighting:\u003c\/strong\u003e mechanical reserve behind or next to an electronic main optic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShooting Sports \/ Range:\u003c\/strong\u003e Training with open sights and redundancy to the optic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService\/Agency-Related Setups:\u003c\/strong\u003e mechanical reserve on Picatinny weapon platforms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical Setup Check:\u003c\/strong\u003e Checking sight height, co-witness, and mechanical aiming reference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"tip-box\"\u003e\n\u003cstrong\u003ePractical Tip: Choose Sight Post Width According to Distance\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\nA narrower sight post covers less of the target but can be acquired more slowly. A wider sight post is faster to acquire but obscures more of the target at a distance.\u003cbr\u003e\u003cbr\u003e\nChoose the sight post width not based on optics, but on real use: close range and fast target acquisition or finer aiming at a slightly longer distance.\n\u003c\/div\u003e\n\n\u003ch2\u003eFeatures \u0026 Construction\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFolding Front Sight:\u003c\/strong\u003e front mechanical sight part; not fully usable without a rear sight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSight Post Width:\u003c\/strong\u003e 1.8 mm – influences target coverage and visibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFolding Mechanism:\u003c\/strong\u003e reduces overall height when not in use and protects the sight line in everyday situations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight Adjustment:\u003c\/strong\u003e the sight post is continuously adjustable in height without tools, which facilitates zeroing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\/HK-Style:\u003c\/strong\u003e HK-Style – important for the sight picture, design, and optical classification of your setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Data\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e ERATAC \/ Recknagel – mechanical backup sight for Picatinny systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder Number:\u003c\/strong\u003e T0542-2355 – unique identification of this version.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e foldable front sight \/ folding front sight – front part of a mechanical sight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSight Post Width:\u003c\/strong\u003e 1.8 mm – wider, faster to acquire, and good for robust backup sight logic, but obscures more of the target at a distance than 1.35 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Base:\u003c\/strong\u003e Picatinny – requires a suitable rail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e HK-Style – design of the front sight geometry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustment:\u003c\/strong\u003e Sight post height continuously adjustable without tools – important for zeroing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction Height:\u003c\/strong\u003e ERATAC system with very flat folded design; compatibility with the primary optic should still be checked.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eScope of Delivery\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e1x ERATAC Folding Front Sight HK-Style 1.8 mm \/ Front Sight\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"info-box\"\u003e\n\u003cstrong\u003eNot included:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\nNo folding rear sight, no complete backup sight set, no optic, no weapon, and no Picatinny rail. For a complete mechanical sight, you need a suitable rear sight.\n\u003c\/div\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs this a complete backup sight set?\u003c\/summary\u003e\n\u003cp\u003eNo. This is only the front folding sight. For a complete mechanical sighting system, you also need a suitable folding rear sight.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat does the sight post width mean in practice?\u003c\/summary\u003e\n\u003cp\u003e1.8 mm describes the visible width of the sight post. wider, faster to acquire, and good for robust backup sight logic, but obscures more of the target at a distance than 1.35 mm\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes this folding front sight fit every weapon?\u003c\/summary\u003e\n\u003cp\u003eNo. It requires a suitable Picatinny rail and a sensible position in relation to the rear sight and the main optic.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the mechanical sight need to be zeroed?\u003c\/summary\u003e\n\u003cp\u003eYes. After mounting, the sight must be zeroed with your weapon and ammunition. Just mounting is not enough.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhen is this folding front sight not useful?\u003c\/summary\u003e\n\u003cp\u003eIf you don't have a suitable rear sight, don't own a Picatinny rail, or only work with an optic without a backup concept.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cp\u003e\u003cstrong\u003eConclusion:\u003c\/strong\u003e The ERATAC Folding Front Sight HK-Style 1.8 mm \/ Front Sight is a clean front sight component for Picatinny backup sights. It is worthwhile if you consciously choose the sight post width and design and truly zero the mechanical sight. As a single part without a rear sight, it is not a complete solution.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"ERATAC","offers":[{"title":"Standard","offer_id":56681786835292,"sku":"T0542-2355","price":182.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0939\/6089\/6860\/files\/ERATAC_Klappkorn_HK-Style_1_35mm_front_sight.jpg?v=1777376493","url":"https:\/\/black-raptor.de\/en\/products\/eratac-klappkorn-hk-style-1-8mm-front-sight","provider":"Black Raptor","version":"1.0","type":"link"}