{"product_id":"eratac-klappkorn-hk-style-1-35mm-front-sight","title":"ERATAC Folding Sight HK-Style 1.35mm \/ 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 Flip-Up Front Sight HK-Style 1.35mm \/ front sight – foldable front sight for Picatinny backup sights\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eA backup sight is only useful if the front and rear sights work together mechanically.\u003c\/strong\u003e\u003cbr\u003e\nERATAC Flip-Up Front Sight HK-Style 1.35mm \/ front sight is a foldable ERATAC front sight with HK-style logic and 1.35 mm post width for Picatinny rails.\u003c\/p\u003e\n\n\u003cp\u003eThis product is not a replacement for a properly mounted primary sight, but a mechanical reserve. The narrower 1.35mm front sight covers less of the target than a wider one, aiding in more precise mechanical target acquisition. It is crucial that the sight line, mounting position, and primary optic are compatible.\u003c\/p\u003e\n\n\u003cdiv class=\"info-box\"\u003e\n\u003cstrong\u003eImportant Note for Classification:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\nBackup sights only function properly if the front and rear sights match and are mounted on the same reference plane.\u003cbr\u003e\u003cbr\u003eBefore purchasing, check: Picatinny rail, existing primary optic, required post width, straight or offset use, freedom to flip, and whether your optic blocks the mechanical sight line.\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\u003eFoldable design:\u003c\/strong\u003e stays flat when the primary optic is in use, and is available as a reserve when needed.\u003cbr\u003e\n✔ \u003cstrong\u003eMechanical sighting solution:\u003c\/strong\u003e functions independently of battery, electronics, or glass breakage.\u003cbr\u003e\n✔ \u003cstrong\u003ePicatinny interface:\u003c\/strong\u003e allows mounting on compatible rails without a special base.\u003cbr\u003e\n✔ \u003cstrong\u003eHK-Style\/Backup Logic:\u003c\/strong\u003e familiar sight pictures for users with mechanical training.\u003cbr\u003e\n✔ \u003cstrong\u003eVariants:\u003c\/strong\u003e Standard version – choice determines post width, alignment, and operational logic.\n\u003c\/div\u003e\n\n\u003ch2\u003eWhy this product?\u003c\/h2\u003e\n\n\u003cp\u003eMechanical backup sights are not decorative. They exist because red dots, rifle scopes, or mounts can fail, be blocked, or be unusable at short distances. However, the benefit only arises if the sight has been zeroed and trained with beforehand.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReserve for primary optic:\u003c\/strong\u003e mechanical target acquisition remains possible if electronics or glass are unusable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFoldable:\u003c\/strong\u003e stays out of the field of view until needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePicatinny-compatible:\u003c\/strong\u003e fits many modern weapon platforms with a continuous rail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraining value:\u003c\/strong\u003e forces clean sight picture and trigger control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"tip-box\"\u003e\n\u003cstrong\u003eInstructor Tip: Backup Sights Must Be Zeroed\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\nMany people mount backup sights and never check them. This is dangerously deceptive. A mechanical reserve must be zeroed or confirmed just like an optic.\u003cbr\u003e\u003cbr\u003eConsciously flip up the sight during training and shoot defined groups. Only then will you know if the elevation, windage, and sight picture truly fit.\u003cbr\u003e\u003cbr\u003eFor offset variants, additionally train the changed shooting stance. Switching to 45° feels different under time pressure than on the bench.\n\u003c\/div\u003e\n\n\u003ch2\u003eOur Assessment\u003c\/h2\u003e\n\n\u003cp\u003eThis ERATAC sight is useful for setups where the primary optic should not be the only aiming option. Especially on range, service sport, AR, and hunting\/tracking setups, a mechanical reserve can be beneficial. It is less useful if the weapon does not have a suitable rail or if the sight is permanently blocked by the optic\/mount.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSuitable for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAR platforms with continuous Picatinny rail\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 backup sights\u003c\/li\u003e\n\u003cli\u003eSetups where electronics should not be the only aiming option\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 suitable rail\u003c\/li\u003e\n\u003cli\u003eUsers who do not want to zero backup sights\u003c\/li\u003e\n\u003cli\u003eSetups where optics or mounts block flipping up\u003c\/li\u003e\n\u003cli\u003ePurely hunting stand weapons without the need for mechanical backup\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\u003eERATAC Flip-Up Front Sight HK-Style 1.35mm \/ front sight:\u003c\/strong\u003e robust mechanical reserve as a complementary system to the primary optic.\u003cbr\u003e\n✔ \u003cstrong\u003ePrimary optic only:\u003c\/strong\u003e faster and simpler, but without mechanical fallback.\u003cbr\u003e\u003cbr\u003e\nThe sight is only worthwhile if it is mounted, zeroed, and trained with.\n\u003c\/div\u003e\n\n\u003ch2\u003eApplication Scenarios\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange \/ Training:\u003c\/strong\u003e Simulate primary optic failure and practice mechanical aiming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAR setup:\u003c\/strong\u003e Plan for backup sight below or next to red dot\/LPVO.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService Sport:\u003c\/strong\u003e mechanical target acquisition as a controllable fallback mode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecial Hunting Cases:\u003c\/strong\u003e Reserve for rough use, tracking, or dense vegetation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"tip-box\"\u003e\n\u003cstrong\u003ePractical Tip: Check Flip-Up Clearance Before Mounting\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\nArrange the primary optic, magnifier, caps, and mounts so that the sight can actually flip up. A blocked emergency sight is dead weight.\u003cbr\u003e\u003cbr\u003eFor short rails, first position the primary optic correctly, and then check if backup sights still have sensible space.\n\u003c\/div\u003e\n\n\u003ch2\u003eFeatures \u0026amp; Construction\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e foldable front sight – complements the primary optic as a mechanical reserve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting base:\u003c\/strong\u003e Picatinny – requires a suitable rail on the same reference plane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariants:\u003c\/strong\u003e Standard version – determines post width, design, and operational logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFolding mechanism:\u003c\/strong\u003e reduces height when not in use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem limit:\u003c\/strong\u003e only useful if zeroed and mounted within reach.\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 – accessories and sights from German manufacturing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e foldable front sight – mechanical backup sight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e Picatinny – rail and sight height must match.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariants:\u003c\/strong\u003e Standard version.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer\/Article numbers:\u003c\/strong\u003e Standard: T0543-2355.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eScope of Delivery\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e1x ERATAC Flip-Up Front Sight HK-Style 1.35mm \/ front sight in selected variant\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 primary optic, no Picatinny rail, no mounting tools, and no complete sight set, unless the selected version is only a single front or rear sight.\n\u003c\/div\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes the sight fit on every Picatinny rail?\u003c\/summary\u003e\n\u003cp\u003eIt needs a suitable Picatinny rail and enough space to flip up. Optics, magnifiers, or mounts must not block its function.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes a backup sight need to be zeroed?\u003c\/summary\u003e\n\u003cp\u003eYes. A mechanical reserve must be checked for point of impact and zeroed after mounting.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between emergency and offset sights?\u003c\/summary\u003e\n\u003cp\u003eAn emergency sight is classically mounted on the top rail. An offset sight is laterally offset and used by tilting the weapon.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat post width is sensible?\u003c\/summary\u003e\n\u003cp\u003eNarrows posts obscure less of the target and can appear more precise. Wider posts are often faster to see. The choice depends on distance and training.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eFor whom is this product not suitable?\u003c\/summary\u003e\n\u003cp\u003eFor users who do not train with their backup sight or do not have a free Picatinny interface with a suitable sight line.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cp\u003e\u003cstrong\u003eConclusion:\u003c\/strong\u003e ERATAC Flip-Up Front Sight HK-Style 1.35mm \/ front sight is useful if you want a true mechanical reserve and are willing to zero it. Without training and without a suitable mounting position, even a good backup sight remains just an unused component.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"ERATAC","offers":[{"title":"Standard","offer_id":56681787162972,"sku":"T0543-2355","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-1-35mm-front-sight","provider":"Black Raptor","version":"1.0","type":"link"}