Mk.II Trebuchet from United States, MA Public Profile

I have 4 other optics from Primary Arms, and I love them all. This is the first one I was disappointed with. For value optics, PA glass is usually acceptable. For whatever reason the one I received was fuzzy. Either it was bad glass, or it was out of focus (focus is not adjustable on this model). I love the ACSS system and have had great luck with PA optics, but this one didn't make the grade for me.

Swapped out the standard A2 style handguards on my White Oak upper for this one. Works great. More of a true floating barrel configuration than the A2 'Float tube'. I noticed significantly less POI shift when using a nice, tight sling. Install was very straightforward. The bushing type barrel nut makes for a very tight slip-on fit before tightening the clamping nuts. (I absolutely recommend a decent torque wrench and a good vice block) A bonus to this design is that you don't need to tweak the torque a little up or down to allow for alignment of the gas tube, you can set the exact torque spec you desire.

The only 'bad' thing I've noticed... In offhand, I've always held tight against the magwell, with the A2 retention ring sitting between my thumb and index finger. This handguard has a much slimmer base, so I've had to make adjustments to my grip to get enough elevation. (changing to a 'V' grip between index and middle fingers) Not really a 'con', but it is an adjustment to take into consideration if you've been shooting one way for a while.