Let's build an extreme use AR-15 (UPDATE PAGE 8 & 9)

[JustMatt]

Stick - I hate to keep bringing up LWRC in my post's but SWAT magazine just ran a 10 month torture test article on 3 LWRCI guns that seem's to be in line with what your looking to do. It was a good read and sounds like it could be a good comparison to use being that the piston system's are supposed to be more durable/reliable than the DI system.

[Stickman]

At this time, we are not able to do piston vs DI gun testing. I believe to do this, you would need a heavy sampling of DI AR15s, and piston weapons from different manufacturers. Then you would need to replicate the same firing sequences and conditions for all weapons, including PCM.

I am aware that piston weapons can be very reliable and durable, but thats part of the problem, many people are starting to think its a must.