If only magazines were compatible.

Careful, they may not get along unsupervised. Apparently my M-1 Garand got pissed at my SP-1, in the rack next to it, and fell on top of it. M-1 can do a number on fiberglass handguards and aluminum.

Nice!

I like a one room school house.

Is the roll pin on your 228 drifting out?

It appears that your breech block dual pins were removed at one point in time and then the new ones (hopefully) since they are one time use per the factory, were re-installed incorrectly. The larger outer pin should have the open end at  12 o'clock while the smaller inner pin should be open at the 6 o'clock position. I know its a small detail but the factory engineers built it that way for a reason and that's what SIG still teaches in their armorers class.