# Bouncing projectiles have no collision

**URL:** <https://forums.unrealengine.com/t/bouncing-projectiles-have-no-collision/354723>\
**Category:** World Creation\
**Tags:** newbie, unreal-engine, projectile, Blueprint, question\
**Created:** [April 19, 2016, 3:40pm UTC](https://forums.unrealengine.com/t/bouncing-projectiles-have-no-collision/354723 "2016-04-19T15:40:04Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![anonymous\_user\_6f10d170](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_6f10d170](https://forums.unrealengine.com/u/anonymous_user_6f10d170)\
**Post date:** [August 2, 2016, 10:55am UTC](https://forums.unrealengine.com/t/bouncing-projectiles-have-no-collision/354723/10 "2016-08-02T10:55:56Z")

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When actor have DefaultSceneRoot you need to “Set Updated Component” in ConstructionScript. By doing this “Projectile Movement Component” will update the “Collision Component” other than DefaultSceneRoot ,then Collision will work!

 ![101053-set+updated+component.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/1/1/2/112714770b35c6e731cb95a832473784947a04c4.jpeg)

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