AXTS receiver, Aimpoint M3 in a Bobro QD mount, Magpul BUIS, QD sling and rail sling adapter, Rainier Arms upper, Samson rail (exclusive to Rainier EVO series). Below, Magpul Pmag in a Bladetech mag holder.
In addition to the two 30-round Pmags, Brian has a 150-round Armatac drum deployed right out of its carrying pouch. The trough between the two sides of the drum allows his left arm to support the weight of the ammunition.
Since the Aimpoint reticle is a simple 2MOA dot, he’s using rangefinding binoculars to figure out the distance to target. Unlike laser rangefinders, these emit nothing and do not require batteries…instead, they require familiarity with milradians.
The most pressing tactical question that remains: what’s the best way to camouflage his bright red beard?