Recoil from blast echoed around rifle end (9)
I believe the answer is:
boomerang
'recoil from' is the definition.
(I've seen this before)
'blast echoed around rifle end' is the wordplay.
'blast' becomes 'boom' ('boom' can be a synonym of 'blast').
'echoed' becomes 'rang' ('ring' can be a synonym of 'echo').
'around' means one lot of letters goes inside another.
'rifle end' becomes 'e' (I can't justify this - if you can you should give a lot more credence to this answer).
'boom'+'rang'='boomrang'
'boomrang' going around 'e' is 'BOOMERANG'.
Can you help me to learn more?
(Other definitions for boomerang that I've seen before include "Primitive weapon" , "Curved throwing stick" , "Aboriginal projectile" , "Backfire" , "Aboriginal throwing stick" .)