This new Co2 Uzi from Umarex has a 28 BB capacity magazine with a double action trigger and a metal inner barrel. This fires .177 metal bbs at up to 400fps with a blow back action! This should get about 40-50 shots per Co2 capsule.
Don't forget to order your .177 BBs and Co2 capsules with this product. Other Accessories are available in the accessories section.