Yup, dead easy in an EBR stock aswell :tup:
All you need is a bolt with a thread that matches the forward most thread on the chassis, screw it in until the whole inner/outer barrel moves down by about 2-3mm.
This then uses the barrel mounting block as a fulcrum point.
I'm actualy planning on moving it back to make the curve more gentle as as it stands now its quite abrupt only gaining the effect over the last half of the barrel
Pics of mine the make it easier as pic almost always say a thousand words :yup:
Note also slight notch in the gas tube to allow free travel from the chassis when compressing the barrel.
Be aware though this does put a fair amount of strain on the forward mount screws of the chassis, mine actualy snapped on 1 side >:, I have cured this on mine by fitting a long nut and bolt either side of the LRB tension screw, right through, from top to bottom, not pretty, but effective :shrug:
Simples :tup:
Carry-on :shot: