no that addon
it is listed below under civil
To the Community
Thank you for testing and describe the bugs. I've never know that there was a bipod function. Excuse me for the bugs because I have made addons for A2 in the last month. The recoils seems to be only have the pistols not the rifles.
The bug will be corrected in the next update when I have the ok from vilas and add some new weapons like mines, grenades or flare guns.