Got the Glock today, thanks for the advice!

Well I went to the gun show today and sold my tact. shotgun, allowing me to buy the Glock 23 (wife's rules, one toy at a time)...I can't wait to take it out this weekend and put some rounds through it. Thanks to all those that gave me advice about 40 cals, especially to those that suggested I check the 23 instead of the 22...I like it much better.

Out of curiosity, what are the two silver shells in the sealed envelope? Are those from a test fire when it was built?

Thanks,
Shane