You won't cut the barrel short enough to affect the gas ports - they're located where the ring on the barrel is. I'm hoping that by pistol grip you mean a full stock that also has a pistol grip as opposed to a PGO grip, because you have a recoil spring that goes into the stock - better to just leave that alone.
You won't need GR sights for a HD gun - a simple bed will suffice. If your plan is to slam a lot of hot buckshot loads, then get the magnum version so you won't batter the receiver to death
|