This rail is basically just a shortened version of our full length G2SA arca rail and measures in at only 4.5”. Mounting this rail is just as fast and easy as its big brother and includes a replacement front action screw which is used as the rear attachment point for the rail. Like all our rail products, the H-G2SA Arca Rail is manufactured in-house in the USA from high quality aircraft grade 6061 T6 aluminum. Compatibility: Unlike the competitors “universal fit” rails, the H-G2SA Half Arca Rail has been meticulously engineered to precisely fit the 2nd Generation Ruger American short action rifle stocks but will also fit most late-model (post 2017) Gen 1 stocks. The G2SA Fits standard short action and Ranch rifles chambered in: 6.5 Creedmoor .308 Winchester .243 Winchester 7mm-08 Remington 6mm Creedmoor 6.5 Grendel .204 Ruger .223 Remington 5.56 NATO .300 Blackout 7.62x39mm 6mm ARC (May not cover all Ruger short action variants—feel free to reach out with fitment questions.) Key Features: Fast and Easy DIY Installation: Comes with drill guides and premium hardware—and can be fully installed in just minutes. Perfect Fit: Using 3D scanning technology to guide our CAD modeling, our rails are contoured/saddled to perfectly fit the factory rifle stock, resulting in a precise and ultra-ridged mounting solution. Weighs Just 2 Ounces: The rail is skeletonized in a strategic geometric pattern to reduce weight while maintaining superior rigidity. Enhanced Stock Rigidity: Significantly stiffens the factory Ruger stock, reducing fore end flex, improving accuracy and consistency. Compatible with all Common Swiss Arca Mounting Heads and Accessories: Full-length Arca rail for easy attachment of tripods, bipods, and other accessories. Built for Performance and Durability: Machined from aircraft-grade aluminum and finished with durable H-190 Cerakote to withstand even the harshest conditions.