I am considering the Stag Arms Model 3L with the Plus Package (1/7 twist and magnet tested). It is a basic model so I can add my own sights and rail gadgets ( just a grip ). I am considering the Magpul ACS stock---I like the thickness of the cheek weld. Also the Isralie Spec Forces pistol grip on Mako website or a Hogue grip. Maybe a mako magwell grip instead of a foregrip. It will be home defense and fun every now again. What ammo is good? I imagine brass is better. Heavy rounds to-- thus the 1/7 twist and home defense. Is it much better than a 1/9 twist? I like the lifetime warranty too for original purchasers too! Thanks in advance.