Started as a hi-capa 4.3. Switched out the frame for a 5.1 gold match frame. Lower is otherwise stock apart from the hammer spring.
Shot around 300fps on vorsk v8 last week but vented out gas at the end of the magazine, possibly because it was cold (we were outdoors). unable to test at the minute as I only have maintenance gas.

EDIT: (tested this morning with abbey green gas, Mags venting gas and hammer half cocks sometimes)

LaCapa customs gold 'JungleCat' Slide
LaCapa customs gold guide rod
LaCapa customs gold Grip screws
5ku Hex outer barrel
Tokyo Marui Gold match inner barrel
Tokyo Marui Gold match slide stop (roller removed as it works better)
AIP 140% Recoil spring
AIP 140% hammer spring
AIP 180% Nozzle spring
Unknown brand gold magwell
Green fiber sights (front and rear)

hop unit in stock, as is the BBU and nozzle (apart from nozzle spring)

No mag included unless purchased additionally. Tracer and Light NOT included

3x black Vorsk hi-capa magazines with Project airsoft 3d printed base £22 each
2x chrome TM hi-capa magazines with Project airsoft 3d printed base £25 

All mags 100% gas tight.

Intended to keep upgrading and customising but I've Just lost all interest and would rather just use and 'out of the box' solution. Would suit someone who likes to build and tinker.
Couple of marks on the slide (Pictured).
 

£160 all in
Payment via paypal G&S only
Will be sent via Parcelforce 48h

no trades please.

Thanks for looking!