Does anyone have the weight difference going to a 13" BCM KMR Alpha from a stock M4 set up (USGI or Magpul handguards)? I'd be chopping the front sight post so really the only weight I'm losing is that and the handguards. Just curious what iincrease I'd be looking at.

Further investigation - It looks like the BCM set up with mounting hardware is 10oz total and my Magpul MOE carbine length is 6.8oz not counting sight post and barrel nut. So if these are accurate, looks like a wash. Not sure if BCM counts their barrel nut in that weight or not. Thoughts? Thanks.