Here... have 'em all...
Bushmaster Barrel Weights
Weight In Pounds, for milled front sight subtract 0.2 pounds
Barrel length_________Heavy Barrels________ Fluted Barrels
10"_________________2.0_________________1.9
11.5"_______________ 2.2_________________2.0
11.5/5.5"____________2.6_________________2.5
14.5"_______________ 2.5_________________2.2
14.5"AK_____________2.7_________________2.4
14.5"MY_____________2.7_________________2.4
14.5"AM (phantom)____2.7_________________2.4
16"_________________2.7_________________2.3
16" Dissipator________ 3.0_________________2.6
20"_________________3.5_________________3.0
24"_________________3.9_________________3.1
26"_________________4.0_________________3.2
Military Style Barrels
14.5"M4_____________2.0
14.5"M4AK__________ 2.2
14.5"M4MY__________ 2.2
14.5"M4AM (phantom)_ 2.2
16"M4 Dissipator______ 2.3
16" Superlight________ 1.9
16"M4______________ 2.2
20"A2 (govt profile)____2.5