timoboll Posted December 17, 2013 Report Share Posted December 17, 2013 Hi my new Marui G17 will blowback but the BBs just falls off the barrel. It also happens when I cycle my gun. I can't shoot a single shot without my bbs just falling out of the barrel. Help! Link to post Share on other sites
Phubar Posted December 17, 2013 Report Share Posted December 17, 2013 I'd suggest dialling on the hop to put pressure on the pellets, so that when they are loaded, they are held in place. The hop unit puts back spin on the pellets to allow them to fly further than unhopped pellets, just make sure to not dial it on too much. Link to post Share on other sites
kenxin Posted December 17, 2013 Report Share Posted December 17, 2013 Adjust your hop up dial to apply more hop. Also, check the bbs you're using. Some poor quality or lower weight bbs can have a smaller diameter than they should. However this shouldn't be a problem for a standard marui. Link to post Share on other sites
mimesis Posted December 17, 2013 Report Share Posted December 17, 2013 Simple test. Lock the slide back. Drop a single bb into the end of the barrel visible through the ejection port. If it rolls through and dribbles out the muzzle, then as other posters have said, your hop-up is adjusted way too low. Link to post Share on other sites
timoboll Posted December 17, 2013 Author Report Share Posted December 17, 2013 K thx a lot I'll try the hopup first Link to post Share on other sites
3vi1-D4n Posted December 17, 2013 Report Share Posted December 17, 2013 It depends also on the force of the slide return. Even though via the BB drop test the BB is held in by the hop rubber, some GBBs and GBBRs have quite a strong slide return and knocks the BB through the hop rubber. The solution is: - Get rid of grease in the barrel - Use heavier ammo - Increase the hop, test if BBs roll out or stays, increase hop till BBs fly flat. Link to post Share on other sites
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