
This is easily one of the best piston AR-15s that I've shot to date. But looking at the somewhat goofy forend on the Rock River Arms PDS Carbine #LR1222, I had my doubts. It seems most AR manufacturers have answered the market demand for piston ARs for their perceived advantages. Some are better than others. So it was with a certain level of surprise that my crew members and myself saw the PDS perform so well in my aggressive testing process. The ergonomics on this model are excellent although the ribbed polymer forend on this model is a bit wide (but flat and stable for barricade shooting too!). 7.2 lbs (naked) For a mid-profile barreled AR is a great accomplishment and it flat out excited me. The PDS is fast into action, easy to carry, and nimble in transition. I have found in my reviews that most piston ARs lose out in the "weighting game" to their DI counterparts. Not so in this model of the gun. The PDS lso available in an aluminum Tri-Rail version (#LR1297, numbers subject to change) but I found those current versions to be heavier with added disadvantage of skin removal as you actuate the ambi, folding charging handles (mounting polymer rail covers might help). The PDS trigger, while pulling slightly higher than the RRA DI guns, still provides excellent feel and crispness. I would not change it (but standard AR triggers will fit). The proprietary RRA "Piston Driven System" or PDS provides a soft recoil impulse, clean bolt operation, easy maintenance (shown), and <b>...</b>
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