[Who is John Galt?]

The 5.56mm SCAR-L weighs 7.7 pounds (empty), while the 7.62mm SCAR-H weighs 8.5 pounds (empty). A 30 round 5.56mm magazine weighs a little under a pound, while a 20 round magazine of 7.62mm ammo weighs a little over a pound. Special sights can weigh a pound or two, so a fully loaded SCAR won't weigh much more than ten pounds.

My Eagle Arms AR carbine weighs 6.8 pounds (empty), almost a full pound lighter than the L, and my IMBEL/DSA FAL carbine comes in at 9.0 pounds (empty), only about a half pound heavier than the H. Funny that they couldn't make 'em lighter...

[ImJustAnotherOkie]

Yea, but you have to clean out the crud in the receiver. Buy the wrong ammo and you have a real mess.