Ultradyne UD Arca Dynalock Rail Features The Ultradyne USA UD Arca Dynalock Rail gives a rifle s handguard the ability to accept both Arca Swiss style accessories and Ultradyne s own Dynalock mounting system from a single rail. This dual compatibility means a shooter can run an Arca Clamp accessory like a tripod adapter or bipod one day then swap to a Dynalock accessory such as the Orbit Ballhead the next without changing hardware on the rifle itself. Machined from 6061 T6 aluminum the rail is built to handle the stress of mounted accessories without flexing or loosening over time. The hardcoat anodized finish adds further resistance to wear and corrosion from field use. Installation is handled through the included M-LOK fasteners with hole spacing strategically set to align with standard M-LOK slot patterns for a secure gunsmith free mount. At 9.30 inches long and weighing only 6.3 ounces the rail adds minimal bulk to a handguard while providing a full length mounting surface for accessories. Measuring 1.50 inches wide and 0.315 inches tall the rail maintains a low profile that will not interfere with a typical cheek weld or grip. For shooters who want the flexibility of both Arca and Dynalock compatible accessories on one handguard the Ultradyne USA UD Arca Dynalock Rail is a versatile upgrade. Ultradyne UD Arca Dynalock Rail Specifications Manufacturer: Ultradyne Model: UD Arca Dynalock Rail Compatible Hosts: M-LOK Color: Black Finish: Anodized Material: 6061 T6 Aluminum Length: 9.3 Width: 1.50 Height: 0.315 Weight: 6.3 oz Available At: GrabAGun