What does the cryptic crossword clue "Comrades almost chucked in firearm (8)" mean?

The wordplay uses a container (one word inside another). THRE (synonym="THRE") in BREN (synonym="gun") = BRETHREN The answer is BRETHREN.

Comrades almost chucked in firearm (8)

Guardian Cryptic #29672 | 1 Down | 2025-04-18 flower