I used the Sport for my shooting demos as part of my recent basic AR15 class last month.
For this class, since I was teaching a group of shooters with both optics and iron sights, I removed the MagPul polymer folding rear sight and added a LaRue fixed QD rear with a Paul Howe designed CSAT XS rear sight installed.
During the course I zero’d the rear sight to the gun and used the Sport for several of the demo that I shot for demonstrating how the drill was supposed to look. We ran just over 200 rounds through the gun, again with a mix of M193 type, including some old IMI that I had on hand, Wolf 55gr FMJ, and some Federal XM855 and 50gr “varmint” loaded with a ballistic tip type bullet.
Eve though part of my demo included shooting the Sport to slay a few myths, like that one can put too much oil on an AR and cause “jams”, and that AR15s are sensitive to dirt and dust, the Sport again had zero stoppages.
At one point I took half a bottle of some old Break Free I had on hand and dumped it onto the bolt carrier group and fired the gun with several NSRs, zero issues noted except I was rather oily afterwards.
I then took a handful of the wet sand from the backstop and threw it directly onto the bolt carrier group through the ejection port and then ran several more NSRs. I did this three times in a row, again with zero stoppages.
Total so far is over 1000 rounds of mixed .223/5.56 through the gun, with no cleaning, and zero stoppages
The Sport continues to prove itself as a legitimate choice as a hard use AR15 in the budget category, and IMHO the only budget AR to do so, so far I am impressed.
I will note that, as one would expect from a man of Paul Howe’s experience and reputation, the CSAT rear sight works exactly as advertised, and I can recommend it for anyone who wants to forgo running an optic on their AR15 for whatever reason.
More range time to follow
PS; ref; What is an NSR?
The NSR, aka non-standard response, is 5-7 rounds fired as rapidly as possible into the high torso of the target, as quickly as the rounds can be kept on target.
This is to differentiate the response from Jeff Cooper’s “Standard Response” of two rounds to the high torso, and the “failure drill” of a follow-up shot to the brain if the standard response fails.
The best explanation as to “why” is in Pat’s SWAT magazine article “Rethinking Target Engagement Sequences: The Non-Standard Response” https://www.swatmag.com/issues/view/september_2003