Description Tactical Weaver Rail Plane Bottom Base DIY 20mm Standard Picatinny RIS Adapter Mount Aluminum Alloy For Scope and Flashlight with 25 mm /30 mm tube or 20 mm rail; Attachs to 20 mm dovetail rail; Quick release nut allows instant attach & detach actionSee Through design allows you to aim with the Rifle's Iron; Sight even with a Scope installed. Specifications: Material: Aluminum alloy Length: 120mm Thickness：4mm Rail type: 20mm Standard Weaver Rail Color: Black Weight: 35g Package include: 1 x DIY Picatinny Weaver 20mm Rail Mount Base 1 x Allen Key and 4 screws Payment We only accept PayPal as payment method. (https://www.paypal.com). Shipping Item will be shipped from China within 24-48 hours after cleared payment. Please make sure you have accurate address on Paypal. To USA USPS 7-14 days To USA HK Post (no tracking NO) 15-20 days Sometimes need 25 days To worldwide HK Post (no tracking NO) 25-35 days Sometimes need even 40 days To Brazil HK Post (no tracking NO) 35-45 days Sometimes need more than 50 days reach Always no tracking NO, if you want tracking NO, please add extra $2.00 Feedback ● We will leave you positive feedback after payment! We really need your positive feedback ! ● If you are not satisfied with your purchase in any way please give us an opportunity to make it right before leaving feedback. Return ● If you are not 100% satisfied, you could send it back to us for refund or exchange. Please be reminded that you would be responsible for the postage for returning the item. Contact Us ●Please allow us to reply your email with in 24hrs. ●If you do not receive our reply, please kindly re-sent your email and we will reply to you as soon as possible.