Bushmasters 16" Modular Carbine combines many of the most requested Bushmaster modular accessories for the AR Type rifle. It is built around an A3 type flattop upper and has a 16" chrome lined chrome moly steel fluted barrel with a milled gas block. This special carbine includes a Skeleton Stock - a new approach to AR15 type stock design which features a comfortable rubber buttplate and a quick detach sling swivel mount that can be positioned to either the left or right side of the carbine. A neoprene foam sleeve covers the buffer tube to provide a comfortable cheek weld - it also deadens the operational sounds of the buffer/action spring. Bushmasters Modular Carbine is shipped with 30 round magazine, operating and safety instruction manual, and a black web sling in a Bushmaster lockable, foam lined shipping case.