Theres bylaws about discharging in your backyard... lol. (well anywhere within the city for that matter)
for example, brantford ontario:
No person or persons shall discharge guns or other firearms and airguns, spring guns, cross bows, long bows, or any class or type thereof within the City of Brantford
Check the bylaws for your city. Regardless of the laws, airsoft guns are 10x more realistic therefor will catch attention 10x faster lol.