Very NICE! I like it!
Dutigaf -- Parkerizing is easier than many people think... It all boils down to what recipe you use, and how good of a job you do with metal preparation, degreasing, & handling.
I use it to refinish those cheap $4 rusted-solid AK mags! $7 to $8 total cost invested and they look brand new! Homebrew parkerizing only costs me $3 to $4 per AK mag to refinish them!
Your FAL looks like it turned out GREAT!!!!
Edited to add: Disassemble the rusted solid mags, remove the cosmoline from the springs (they're good as new), and break the rust off the follower/magbody. Sand / Sandblast the mags. Degrease & park 'em.
I did mine on the side-burner of my grill - I stole one of my wife's good stainless steel pots and now it's sole designated use is parkerizing! Don't re-use your pots for cooking after parkerizing with them - it's not good for your health!
After the park is done I rinse them, and then submerge them overnight in a 5 gallon bucket of used motor oil (I heard this helps darken the park finish a little, as well as allowing the park to soak up plenty of oil). Then take 'em out of the oil and clean 'em up.