barrel weight

AR/M4 AR Technical Discussion
1

I am looking for some weights.
14.5 inch M4 profile
16 inch lightweight profile
18 inch SPR
20 inch Military profile
20 inch HBAR

Thanks

2

Here’s a cut-and-paste from Bushmaster’s site - no idea as to accuracy of the data, but it’s a start:

Barrel 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
  14.5"IZ______________2.7_________________2.4
  16"_________________2.7_________________2.3
  16" Dissipator________3.0_________________2.6
  20"_________________3.5_________________3.0
  20" DCM____________3.7
  20" Predator_____________________________3.2
  24"_________________3.9_________________3.1
  24" Varminter____________________________3.5
  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
  14.5"M4IZ____________2.2
  16"M4 Dissipator______2.3
  16" Superlight_________1.9
  16"M4_______________2.2
  20"A2 (govt profile)_____2.5