Dont know about an acre for outdoor play... generally when I play outdoors I'm looking for lots of land and space to play larger games, if I wanted upclose and small areas then I'd go indoors for CQB hence XT. Unless of course your planning on building a few houses and have CQB on the acreage so that the houses can be stormed and raided. Otherwise get about 80 acres and have some real games.
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