Not a S&W but figured I'd share the AR goodness.
Assembled this one myself.
Specs:
-Midlength FN CL/CHF 1 in 7 twist Barrel.
-MLOK AFG Adapter(Modded to Fit MOE)
-Magpul AFG2
-A2 Flash Hider
-PSA Upper
-PSA Lower
-Spike's Tactical Buffer Tube
-PSA Buffer/Buffer Spring/LPK
-Magpul Foliage Green Handguard/K2 Grip/Magazine/Trigger Guard/Rail Cover
-B5 Systems Bravo SOPMOD Stock
-LMT Rear Ironsight
-Aero Precision Bolt Carrier Group
-BCM Gunfighter Charging Handle: Mod II
-Seekins Magazine Release
-Troy Ind. OEM End Plate
KISS for now. Im going to get the newer Primary Arms Micro with 50,000 hours of battery