F Brownells Bundles M5 16" Assembled Upper Receiver 308 Win W/ Optics - Aero M5 16" Upper Mid-Length W/ Exps3-0 Holographic Red Dot $1,448.99 NONE - additional Brownells F Brownells Bundles Dd 14.5" M4a1 Somcom Upper Receiver W/ Eotech Optic - Dd 14.5" M4a1 Socom Upper W/ Exps3-0 Holographic Red Dot $1,548.99 NONE - additional Brownells F Brownells Bundles Dd 14.5" M4a1 Fsp Upper Receiver W/ Eotech Optics - Dd 14.5" M4a1 Fsp Upper W/ Exps3-0 Holographic Red Dot $1,548.99 NONE - additional Brownells F Brownells Bundles Dd 10.3" Mk18 Riii Upper Receiver W/ Eotech Optics - Dd 10.3" Mk18 Riii Upper W/ Exps3-0 Holographic Red Dot $1,548.99 NONE - additional Brownells