Project Featherweight

[rob_s]

Found the chart, posted new thread

http://m4carbine.net/showthread.php?p=630961#post630961

[SC-Texas]

Built a 4lb, 13oz rifle.

[SC-Texas]

Polymer lower, Carbon fiber forearm, 11.5" cmmg Govt. Profile barrel.

[ForTehNguyen]

my BCM 16" middy lightweight with Cav Arms lower was about 5lbs 12oz, center of balance somewhere above the magwell

[Robb Jensen]

http://sphotos.ak.fbcdn.net/hphotos-...7_514499_n.jpg

Polymer lower, Carbon fiber forearm, 11.5" cmmg Govt. Profile barrel.

http://hphotos-snc3.fbcdn.net/hs489...._2632439_n.jpg

Very nice but it is a SBR.
Nothing wrong with that but my wifes rifle Project Featherweight was to be a non-SBR so that additional paperwork to take it out of state on vacation or emergencies wasn't necessary. Had it been an SBR I would have make it a 11.5" CAR gas barrel turned to .555-.565" with a Troy TRX 9" rail which would have saved more weight. If CAV arms made a lower with an 'entry' or Sully length stock I'd use that too. That would be damn lightweight.

[LonghunterCO]

If CAV arms made a lower with an 'entry' or Sully length stock I'd use that too. That would be damn lightweight.

There is a guy over at TOS that cuts the Cav stock/receivers down (he's from TX) replaces the butt pad with a rubber one. He says that there is a couple oz reduction in weight.

[99HMC4]

Polymer lower, Carbon fiber forearm, 11.5" cmmg Govt. Profile barrel.

Sorry but I cant stand that lower. At least use a bushmaster carbon upper/lower combo....

[Robb Jensen]

There is a guy over at TOS that cuts the Cav stock/receivers down (he's from TX) replaces the butt pad with a rubber one. He says that there is a couple oz reduction in weight.

You have my ear! Please PM his contact info.

[Stonerriflefan44]

Anyone know what the weight savings are between a LW barrel vs a standard M4 profile barrel? Any pros or cons to having an exsisting barrel re-profiled?

[ForTehNguyen]

Anyone know what the weight savings are between a LW barrel vs a standard M4 profile barrel? Any pros or cons to having an exsisting barrel re-profiled?

Daniel Defense posted a while back saying theirs a 6oz difference b/t their govt carbine uppers vs the pencil carbine uppers. Keep in mind this is 6oz off the end of the barrel, so it feels like it loses more weight than that and shifts the center of balance of the rifle more towards you.

Reprofiling it is another way to do this also. I cant think of any cons