When Weight Means Everything
When it comes to having an AR-15 that's easy to handle and carry, weight means everything.
Shave every ounce you can by adding an FM Products Ultralight Monolithic AR-15 Upper Receiver to your lightweight rifle. Complete with a receiver and matching M-LOK handguard, these uppers are machined from 6061-T6 aluminum and can be had in 15-inch or 8.5-inch configurations.
The FM Products Monolithic Upper uses a unique locking mechanism that's exclusive to these upper receivers, providing a slim, trim look and feel for your upper.
Big Book Catalog, Issue:72, Page:005