AT3(TM) AT-15 FLATLINE Rifle 16 Inch .300 BLK - 15 Inch M-LOK Handguard - Black (Color: Black)

AT3 Tactical FLATLINE .300 BLK Rifle - the AR You Wanted the First Time The FLATLINE .300 BLK rifle is has all the features you need, plus the bells and whistles you'll actually want in an AR-15. For years, we've helped folks upgrade or build their custom rifles, and now we're offering this: a rifle [...]