Umarex Big Blast (SMU)

Came on time,but had to pick up at post office because package was open! Product in good shape though! I guess it's a matter of finding the right bottles? I've had 6 successful popped bottles out of probably 40 attempts with not one successful 2 liter bottle attempt! I've tried more pressure and less pressure,but usually end up with same fizzled result! But they are cool as hell when they work right! Had cops called on me once already!

I’ve only used these once but had a great time with my friends. I’m fortunate to live out in the country so I can walk out my back door, set everything up and start shooting. I was using a suppressed Ruger 10/22 Charger with sub-sonic ammo and the results were fantastic. A poor man’s alternative to Tannerite (and much, much safer & cheaper). I tried various size bottles & found the 2 liter ones the best. My friends have let me know they’re saving all their empty soda bottles and can’t wait to give it another go.

Was a bit disapointed. It appears not just any bottle will do. Seems the name brand sodas are a whole lot tougher and when hitting them it will simply let the air out the hole. However: Using the off brand cheaper products we were able to get a real nice boom. Some of the tops were split in half (maybe due to pressure being too high?)PROS:You get it to work and it will make a loud boom!Nice to have string on the lids so you can hang the targets and not loose tops!CONS:Need thin walled bottles!Spooky airing them up!Some of the tops split in twoOverall, great fun for my nephew and a BB gun!

My first use of these Caps on a 16 oz Soda resulted in a BANG so loud that my neighbor ran out from his Garage to make sure everything was OK.One drawback I've found is that outside of carbonated Soda Bottles, the Caps don't fit many other Bottles, correctly. DO NOT buy if your hoping to use on Water Bottles, Ice Tea Bottles, Sports Drink Bottles etc. They will not fit properly.

Lots of fun. They can be hard to pump up to over 80PSI with a cheap pump, which seems to be key to success, So be sure you have a decent one on hand. I still had some duds regardless. I highly recommend adding flour or something to create a visual display. I plan on getting biodegradable glitter. Also want to find some 3 liter bottles, in hopes of increasing the explosion.