Ar9 comes with a new frontier lower. I went with this lower so it would take the steel Hk mags, Spikes 9mm enhanced bcg, cmc trigger, Aero handguard, SBPDW brace, true glow optic. Comes with 4 Hk mags possibly more if i can find them. Has had 200rds through it. Great supressor host. 


48o-32two-640o