Hmm...definitely got axed. After reading all the chapters it felt kind of disjointed so I could see how a publisher would opt to drop it in favor of something else. Sadly, now 8-ish years down the line it looks as though there won't be a part 2 to continue that interesting plot hook right at the end which could've better driven it down the sports-manga lane.
But man, looking back at it the early - mid 10's sure had a bunch of airsoft/survival game adjacent manga.
Upotte!! (real guns but similar vibe), Stella Jogakuin Koutou-ka C³-bu, Sabagebu! and this with the former three all being published at once for a span. And yet, only Upotte (the oldest of the bunch) remains standing.