Selenoid

[mag_pbg]

I was wondeirng where I can buy a selenoid like the ones used for the emag, Im planning to make my own electronic grip.

[TransMan]

an electronics store maybe radio shack

[magman007]

doubt you will find one like that at radio shack, its one beefy solenoid, and a powerful one at that

[halo13]

you could buy the emag solenoid off of the AGD online store

[sniper1rfa]

solenoidcity.com
they have a decent selection and have some helpful dictionary and explanation pages.