Congratulations; you've stumbled on one of the great "sleeper" guns currently available! On pure cycle speed, the Saiga-12 gives the vaunted Benelli a run for its money (and could do much better if it wasn't for the crappy trigger that comes standard).
I got a quote from Marc Krebs to install a modified AK-74 front sight tower on the barrel and an AR-style adjustable peep sight on the receiver cover. if I choose to have that done, I'll slap a SureFire universal light on the barrel and retire my 11-87P... I like the Saiga THAT much.
Unfortunately, StarLynx, adding a pistol grip to the Saiga-12 is not legal at this time, due to the way the AW ban is worded for shotguns. Your detachable mag is your allowable Evil Feature. That changes next September, of course, assuming the AWB is not replaced. At that time, I plan to convert my S-12 to pistol-grip configuration and add an RPB skeleton stock and a G2 trigger group.
For more Saiga-12 info, check out the dedicated forum at
www.forum.saiga-12.com