Description: Action: Safe/Semi-Auto/Full Auto Gearbox: Full Metal Ver. 2 Power/Type: AEG (Automatic Electric Gun) Length: 27.5 in. / 30.5 in. (Extended Stock) Weight: 4.20 lbs Speed: 410 - 415 FPS/8.17 RPS Sights: Front Flip-Up Sight, Rear Flip-Up Sight Hop up: Yes (Adjustable) Magazine Capacity: 300 RD. HI-Cap -Compatible brands: Compatible with most brands Ammo Type: Airsoft BBs -Recommended BBs Brand: One of the great things about Lancer Tactical Airsoft Rifles is that they function well with any high quality BBs. (depending on FPS and range you are trying to accomplish, the weight of the BBs makes a pretty big difference. If you notice a curve as the BB launches to your opponent, we recommend you try something a little more heavier. ie. If you’re using .20g, try .25g. Your FPS may decrease but your accuracy will be a lot better.) Caliber: 6mm Battery & Charger: 8.4v 1200 mAh NiMH Battery/Charger Included Package includes: (1) Lancer Tactical Airsoft M4 SD Electric Rifle (LT-15B) (1) Lancer Tactical 1000 .20g BBs Bag (1) 300 RD Hi-Cap Magazine (1) 8.4v 1200 mAh NiMH Battery & Wall Charger (1) Barrel Cleaning Rod