Due to the amazing constuction, a Malkoff M60 would fit the bill nicely.
If this is for real world use on an actual weapon, don't buy the cheap drop-ins.
Yes, it will be a gift for somebody to be deployed in Iraq. Would malkoff's M60 be needing some triming or would it fit snugly in the light. Thanks for the chime.
The LU10 needs to be opened up a little bit.
If your buddy needs an LED drop-in, the Malkoff is definitely the best.
But if he'll be using an IR filter over the front of his M951 to be used in conjunction with night vision equipment, he'll want to stick with his incandescent lamp assembly. LEDs don't emit enough IR light to work with his other gear.