A little cross posting from the 15-22 picture thread:

I assembled my AR15 in 2009 and got the 15-22 to practice cheaply. I like simplicity and cross utilization so I decided that since I got a 15-22 instead of a 10-22 due to the former handing like an AR15, I decided to modify mine to look like my BCM Midlength AR15.

Top rifle AR15:
Denny's Guns lower receiver
DPMS lower parts with RRA fire control group
Magpul MOE grip and trigger guard
Magpul ACS stock
BCM receiver extension, standard buffer & spring
Magpul ASAP endplate (changed from IKH SLAP in pic)
BCM 16" midlength standard upper receiver and BCG
Magpul MOE midlength handguards
Magpul MOE Vertical Grip
Matech 600M backup sight

Bottom rifle is my 15-22:
Magpul ACS stock
Magpul MOE pistol grip
Tacticool22 handguard adapter
AR15 barrel nut assembly
AR15 handguard cap
Trueshot Technologies A2 front sight
Magpul MOE midlength handguards
Magpul MOE Vertical Grip
Primary Arms M4 Multi Reticule Red Dot
Rear sling pigtail held on by paracord for use with my Emdom/MM Gunslinger sling