Utilizing UNITY(TM) Tactical's revolutionary Flip-to-Center technology, the 2.91 FTC (Flip-to-Center) 30mm Mount brings any 30mm magnifier to the 2.91 height to pair with the GBRS Group Hydra Mounting Systems. The 2.91 FTC 30mm Mount employs a simple force-to-overcome mechanism and stows the magnifier below the optical sight plane and completely within the footprint of the weapon's receiver when not in use. This eliminates the flip-to-side placement of legacy products, in which users receive all the benefits of magnification when required with no occlusion of sight pictures when stowed. DESIGNED AND MANUFACTURED BY UNITY(TM) TACTICAL MADE IN THE USA SPECIFICATIONS: Height: 2.91" to Optic Center Line Interface: 30mm Ring Mechanism: Force-to-Overcome Rail Mount: QD lever Dimensions: 1.45" L x 2.72" W x 2.77" (stowed) or 3.61" (raised) Materials: 7075 T6 Aluminum Weight: 4.9oz Coating: Type III Hardcoat Anodized COMPATIBILITY: Compatible with any magnifier with a 30mm body, such as Aimpoint 3XMAG, Aimpoint 3X-C, and others COLORS: Black FDE GBRS GROUP LIMITED LIFETIME WARRANTY GBRS Group offers a limited lifetime warranty against defects in materials or workmanship affecting the quality and function of its products when used in the correct manner. Products must not have been misused, improperly set-up, or been abused for this warranty to apply. The determination is solely GBRS Groups and its obligation will be to repair or replace the defective product. Purchaser determines suitability of all product usage and assumes all risk and liability. Neither the seller or manufacturer shall be held liable for any injury, loss or damage from use of the product. Please contact GBRS Group for a written return authorization before sending anything back. No credits of any kind will be offered without such authorization.