JE Machine Tech .308 Carbine Buffer Tube Combo DPMS LR308 Carbine / AR10 Carbine Length Buffer Tube Black PS-BTM Combo-308. 308 Carbine Buffer Tube Combo Specifications for JE Machine Tech .308 Carbine Buffer Tube Combo: Manufacturer: JE Machine Tech Color: Black Fabric/Material: Aluminum/Polymer Gun Model: AR-10 Weight: 0.67 lb Features of JE Machine Tech .308 Carbine Buffer Tube Combo For DPMS LR308 Carbine / AR10 Carbine Length buffer tube Package Contents: JE Machine Tech .308 Carbine Buffer Tube Combo What firearm models does the manufacturer say JE Machine Tech .308 Carbine Buffer Tube Combo is compatible with? The manufacturer suggests that JE Machine Tech .308 Carbine Buffer Tube Combo is compatible with AR-10JE Machine Tech PS-BTM Combo-308: .308 Carbine Buffer Tube Combo DPMS LR308 Carbine / AR10 Carbine Length Buffer Tube Black