Nice of you to respond could you be a little more specific
The Larue accarizer was built specifically for your use case. It uses the carry handle and front site tower as anchors for a picatinny rail. From there, you can use any scope mount that fits the purpose. From their website…
“We were approached with a request to modernize an existing surplus of Vietnam-era carbine style rifles with fixed carry handles and A2 front sight posts.
The solution needed functionality to mount modern accessories like lights, lasers, and optics while maintaining the existing receiver and leaving the barrel in place.
Made of aluminum used in advanced Jet Fighters and weighing in at just 8.2 ounces, our new LaRue AccARizer™ (Accessory AR Riser) is the result of this project.
The AccARizer™ allows for M-Lok accessories to be mounted on the 3 and 9 o’clock positions, as well as a full MIL-STD-1913 Picatinny Rail along the top.
With this rail, you can modernize older rifles that have a fixed carry handle receiver and carbine length gas system and A2 front sight post.
The provided hardware uses the existing mounting hole in the carry handle and replaces the front sight post, with no permanent modifications to the firearm required.
This also allows rifles on governmental and departmental loans to be modernized without significant changes to the rifle’s initially provided configuration – If you are an LE or Gov agency looking to modernize a portion of your armory, reach out to us directly for bulk sales.
The rail also ships with iron sights that can be mounted along the pre-threaded holes along the top. These 1911-style sights allow for rapid target acquisition and engagement if no optic is mounted.
We are offering our new LaRue AccARizer™ rail (with iron sights) and a LaRue QD mount of your choice to bring your carry-handle to the future for $199 and, for $100 more, snag an MBT Trigger to complete your setup.”