I visited Magpuls site to get an insight into what you meant. I have never fired the M4 or variants of, so am not familiar with how that weapon really handles.
My concern, based on having been in the military for over 10 years, was when firing a weapon so close to the floor on its right side, was the potential of a jam caused by the dust and debris thrown up by the ejecting round, that could enter the chamber.
From watching that video, it's obvious that particular training school teaches that position however it certainly looks highly likely that a jamming issue could arise.(Watch the dust thrown up in the video) I'd be surprised if the U.S Military Training school teaches that firing position. Maybe a U.S. serviceman could comment.
Terox if you are a youtube crazy, you can search a little bit more and find it being used more than you expected; including the use in some SWAT agencies and taught in many tactical companies. I have seen limited use of it in any public media depicting it's use in the military. But you run the L85 so concern understood, it's the same with your shoulder transitions, you have to angle the weapon as to not get ejected brass in your face.
You're right about dust, grit, pebbles. It can be a risk factor.
Have a read: http://www.calguns.net/calgunforum/s...d.php?t=248431 ... LAPD SWAT used it successfully to take out one of the gunmen in the North Hollywood shoot-out, he was shot in the ankle and bled out.
If you have your basic survivability drill i.e. Run, Down, Crawl or Engage. As soon as you go prone you can adapt it to where you need to shoot and what you need to shoot under.
It was used in Iraq to some degree; it's a time and place technique based on the individual so of course it's uncommon but Travis Haley and Chris Costa teach it with absolute resolve -- and you know their backgrounds.
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You are a great at what you do and I know will do Arma 3 justice in that department. I really hope alot of your animations make it into Arma 3. Good job and thank you.
I would also add, Terox, that for ARMA 3 purposes all firearms seem to have 100% reliability against dust or jams, so that's not for urban prone in ARMA 3! As for "is it authentic"... honestly, that comes down to your opinion of Magpul Dynamics' credibility (Travis Haley and Chris Costa being the two most famous instructors who taught the classes and the position but who have both left for separate companies).