looks like the rail, flip up sights and crush washer for the muzzle brake will be here tomorrow. picked up some ammo yesterday too, so maybe i can get out and shoot it this weekend or next.
i also found this cool little mod for the rear takedown spring. cost me $6 with the tap.
this is what my rear take down pin detent spring looked like. i tweaked it whilst taking the buffer tube on and off. it still worked fine, but i wanted to fix it.
you need a 4-40 threaded allen head screw that looks like this. i bought 10 of them b/c they were 20 cents each and i'm sure i'll lose some.
tap the rear hole with a 4-40 tap
then trim an 1/8" off of the spring, install the detent and spring and then the screw.
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i also saw this guy on youtube that used a wood burning kit on his pmags. you can use it to add some grip to the plastic mags. i thought it was cool, so i did it to one of mine. the stippling takes forever, i've found doing lines is much faster and works just as well.