Do all Colt 14.5 M4(6921) Barrels come with extended feedramps? Also, their barrel assemblies on fidelisfirearms say A3 upper, does this mean they do not have the extended cuts on them?
All new Colt carbine barrels have M4 feed ramps.
The assemblies on fidelisfirearms dont say much other than 14.5, A3 upper. How can you tell if these are new or not? Would it be safe to assume that these have M4 cuts despite the A3 description?