Valken 11.1v 1000mAh Stick Lipo Battery - Deans Tactical Vests This simple

This simple

than the adult size may be a better choice

The 90 degree is for those using upgraded zero-trigger setups

Nine Ball Main Spring Housing w/ Spike

The G&G Rotary Hop Up M4 Chamber is a rotary style for M4 and M16 style airsoft guns

Valken 11.1v 1000mAh Stick Lipo Battery - Deans Tactical Vests This simpleValken 11. 1v 1000mAh 20C Stick Lipo Battery (LiPo). Fits in M4 buffer tubes and most PDW style stocks. This is a Deans T Plug style connector. Only for custom guns with a Deans connection. Size should fit in most guns, crane and rear M4 stocks. It's a little thicker (square) than others, but shorter too. Requires LiPo specific charger. Charge into 4 prong balance plug ONLY (not in the output connector) with LiPo charger, in a safety bag only.