T&E: Centurion Arms Rail System
Rainier Arms has provided a Centurion Arms midlength extended rail system for T&E.
Even when barrel nuts are considered, it has roughly the "length to weight ratio" of a Daniel Defense Lite Rail (this one is 12.4oz, compared to a DD 12.0 FSPM at 13.6oz). Plus, it offers rotation limited QD sockets. Although the current trend seems to be toward handguards that only have a top rail, the Centurion rail is different enough to warrant some attention. So far, I've only photographed and examined it, but it'll go on a rifle soon.

Comments on AR-15 Maintenance, Cleaning, Lubrication, & Reliability
Regular readers/viewers of this blog will not be surprised by the information contained herein. I produced this primarily for the Youtube audience.
It's a basic summary of why I believe the AR-15 to be an incredibly reliable weapon, with a few tips on how to avoid problems - but those tips apply to all self-loading weapons.
AR-15 Buffer Comparison – Enidine Hydraulic vs H2
I was recently loaned an Enidine hydraulic buffer by Rich at Arizona Armament, and dropped it in my Spike's Tactical lightweight AR-15 for some comparison shooting with the "regular" buffer that rifle normally is used with - an H2. Right now, I'm just presenting some initial findings, not a comprehensive evaluation.
I'm not thrilled with the Enidine. Although it cycles slower, the difference comes from a slower return to battery, which I have not found to be conducive to higher reliability. This, coupled with the shorter stroke caused by the Enidine buffer, gives me reason for concern at this early point in my evaluation.