{"product_id":"c4-folding-rear-sight-udblack","title":"C4 Folding Rear Sight Udblack","description":"The Ultradyne C4 Flip-Up Rear Sight utilizes Ultradyne's exclusive dynalign sight picture technology for accurate and immediate acquisition. Most BUIS systems utilize a sight picture that is non-intuitive. In such systems, the brain's visual systems are asked to align a circular rear aperture with a rectangular front post shape while simultaneously ignoring the 'ears' that protect the front sight post. Dynalign's circle-within-circle sight picture allows for faster sight picture acquisition. Additionally, the use of a front aperture further reduces parallax effect which makes accuracy less depend on precise sight alignment. Dynalign is a faster and more accurate sight picture than can improve shooting performance.\u003cbr\u003e\u003cbr\u003eFeatures:\u003cbr\u003e\u003cbr\u003e- Purely Concentric Sight Picture\u003cbr\u003e- Maximum Flexibility\u003cbr\u003e- Superior Side-Adjust Ergonomics\u003cbr\u003e- One-Handed Deployment and Stowage\u003cbr\u003e- Interchangeable Aperture\u003cbr\u003e- MIL-STD-1913 Picatinny Rail\u003cbr\u003e- CNC Machined\u003cbr\u003e\u003cbr\u003eIncludes:\u003cbr\u003e\u003cbr\u003e- .070\" Aperture\u003cbr\u003e\u003cbr\u003eSpecifications:\u003cbr\u003e\u003cbr\u003e- Finish: Salt Bath Nitride\u003cbr\u003e- Material: 4140 Chrome Moly Steel\u003cbr\u003e- Height: 0.369\"\u003cbr\u003e- Length: 1.38\"\u003cbr\u003e- Weight: 2.5 oz.\u003cbr\u003e- Adjustment Click Value: 1\/2 MOA\u003cbr\u003e- Maximum Windage Adjustment: 40 MOA\u003cbr\u003e- Maximum Elevation Adjustment: 18 MOA\u003cbr\u003e- Offset: No\u003cbr\u003e- Fixed or Folding: Fixed","brand":"Ultradyne","offers":[{"title":"Default Title","offer_id":22112385564751,"sku":"338374","price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0092\/7861\/9727\/products\/GS338374.jpg?v=1555757436","url":"https:\/\/green-supply3.myshopify.com\/products\/c4-folding-rear-sight-udblack","provider":"Green Supply3","version":"1.0","type":"link"}