Larry,

Had mine since 2011/12 the early Mag-pul moe model. NO issues in at least a couple (or more) thousand rounds...... the boys love it. Ian and I blew through about 400rds one morning before he went back to college.

By myself I tend to use the 10 rd magazines and put maybe a 50-100 rounds through it a session...... I'm not big on spray and pray..... I usually shoot at the reduced (14x22") silhouette targets. At 25-50 yds.

With balk ammo and a Vortex viper red dot .... mine will break 4" clays at 50 yds....... then break the halfs ...... and the quarters..... braced offhand.

Never really tried to shoot "teeny tiny" groups with it as the dots I've used are in the 3-6MOA size..... teeny tiny groups I get the CZs out.

Fun guns..........................good AR training tool as the controls are the same..... gun is a bit lighter.