Acetech AC5000 Chronograph lck12 This modification allows compatibility with

This modification allows compatibility with QD sling cups commonly found on lower receivers

Designed for "two eyes open" method of sighting

- 400 to 420 fps

we found it difficult to fit the MOSFET

For Mil-Spec Buffer Tube

Acetech AC5000 Chronograph lck12 This modification allows compatibility withFeatures User friendly interface with 128*64 LCD. Powered by 2x AA batteries or micro USB input (no battery charging function) Ammo parameter settings support up to 5 slots and can be selected on SCR2 25 memory slots for velocity and ROF Idiling and low battery auto power off function Suitable for 4. 5mm, 6mm, 8mm and 18mm BBs Easy to use controls Color: Black Dimensions: 117mm x 97mm x 59mm Battery: USB micro power or 2X AAA Material: Polymer