G&G Hop up Bucking

[Dean]

I was looking around on AirsoftGI to upgrade my M4 when I came across this hop up bucking by G&G.
www.airsoftgi.com/product_info.php?cPath=31_170&products_id=3715

All of the reviews say it's great and all that, but part of one review says "Not recommended for 400+fps though".

Can someone tell me as to why this bucking would not handle my M4 that shoots 420fps? Or is that review inaccurate?

Thanks.

[TheEnd]

The theory is that soft buckings will wear out faster or tear when a bb is fired at high fps past it. To help prevent this companies make buckings that are made of harder rubber. The harder rubber won't tear as easily. The sealing lip of a hard type bucking is stronger than a soft type and will prevent the air leak between the nozzle and bucking associated with high fps.

The reality is that the hop up is a friction system. The harder the bucking, the less friction, the less it performs. I've used several hard type buckings and all of them have down right sucked. With a King Arms purple hard type I was getting almost half the range as with a standard soft at 550 fps.

The G&G bucking will be fine in your rifle. If I'm not mistaken the G&G M14 veteran shoots around 420 fps and has that bucking in it. If I were building a 420 fps rifle I would without question use a normal soft type.

[Dean]

Thanks TheEnd, I understand it now.