Thanks on the AP4 comment,that's a great lookin' Bushmaster you have and I like your M9 bayonet a really nice set up you have there.
As far as groups with the rifle scoped at a 100 yds it will keep groups at 1" to 1 1/4" even with the the course crosshairs,the Burris 1.5-6 power scope works good hunting but it sure isn't a bench or varmint rifle scope
When I bought my AP4 carbine I was wanting a semi auto in a 308 to replace my Rem 7400 06' for quicker follow up shots if needed while still hunting and stalking whitetail through woods and brushy creek bottoms here in MO. When first looking at the DPMS LR308 I was thinking 20" barrel,then found out the weight and have always been very happy with the size,weight,accuracy,and balance of the DPMS AP4 carbine.
Enjoy that new AP4!!