Let me tell you, the PSG-1 stock is the most comfortable stock made!! Full adjustability ensures that this gun can fit anyone and the fuller, hand filling adjustable pistol grip reduces hand fatigue that is common with thinner grips. The HK claw mount is just too high for the standard G3 stock, so the PSG-1 stock is perfect for this gun. The SG/1 stock just isn't high, or comfortable enough. Plus, I wanted something with style, different, custom!! Since I do all my own work, I make what ever comes to my mind. The internals have been replaced with the Systema M120 Full Tune Up Kit. The EG 1000 motor provides more than enough torque and speed for the following shot. The weapon is topped off with the S II S 4X40 airsoft scope. The gun is also modified to fire semi automatic only and the 15 round PSG-1 magazine rounds out the conversion. Since this gun is a carbine, I didn't want to try and make it a full fledged sniper tool. This gun is perfect in the urban sniper role...and for the sniper hunter!! Stock AEG's just don't have the reach or accuracy needed to take out a disciplined sniper/spotter team. But, nothing puts the fear into a sniper more than a well trained counter sniper (watch "Sniper"....Tom Berringer is always looking out for the counter sniper who is hunting him) and his specialized weapon. They make a difficult objective almost impossible. In the urban environments or smaller playing fields, this gun excels in the sniper role. This is my second custom gun, but not my last.