Do pistols turn brown at 4 weeks??

i'm having a totally crazy day, running around trying to get 9 million things done, had a minute to check my plants and i noticed that a lot of the pistols are drying and and turning brown. i know that is normal at some point but i didnt think it was this soon? these are indoor hydro under CFL, they were looking under nuted this morning so i added some more, any thoughts, is this normal or a prob? i saw the first brown pistol about a week ago and now its just getting worse.

4 weeks is normal depending on strain.

can do but you'll have too wait till the rest of the budds are ready to harvest

ok im so happy that its normal i was thinking "NOT another prob omg!" oh and its masterkush

yea, the trichomes are what u look at with a scope. harvest when half amber half cloudy.