This week we tried the Mobius Action Camera, a tiny matchbox sized 1080p camera that attaches onto anything using velcro. The image quality is very decent and the Mobius is much more discrete than your typical GoPro or Contour action cameras.
Replica & Modifications
My favorite replica for CQB is my trusty M4 CQBR. I have had this replica for over a year now and so far, it has performed extremely well in many different situations.
I initially bought it as a basic M4 RIS Katana System because of its pragmatic fast cylinder switching system, allowing the user to tailor the replica's FPS in seconds before a game to comply with terrain regulations.
From there, I removed the external barrel extension to shorten the replica's length. I installed a CNC hop-up unit, a new soft hop-up rubber and a 300mm 6.01 precision inner barrel. These modifications have boosted its effective range from 50m to about 60m. To increase the rate of fire and reactivity, I also installed a hi-torque motor coupled with a MOSFET unit. The replica runs with a 7.4V 25C 2000mAh nunchuck li-po battery with sturdy T-plugs (deans) connectors. With a red cylinder it shoots at 375 fps at a rate of 1000 BBs per minute and with the blue cylinder it shoots at 315 FPS at a rate of 1200 BBs per minute.
I simply love its reactivity in semi-auto, its precision, range and the impressive rate of fire in full-auto. It is short enough to work well in CQB and has enough range to hit targets in closed and open areas alike. As I am very familiar with AR platforms, for me, it's ease of use and flexibility are valuable attributes.