EMG / Maxx Model CNC Aluminum Hopup Chamber for M4 Airsoft AEG Rifles (Model: M4E / EMG Blue)

"This was a crucial piece of my DMR build. Greatly enhanced the functioning of my AEG. Zero issues. Will absolutely put this into the next build. Highly recommended.

"my first hop up install ..unit comes ready to drop in , no need to assemble the unit. works but i get a double feed every 4-5th shot but i think thats probably a different issue (gear ratio maybe?)

"Just received this hop up and man it's way better than my stock cyma hop. It works awesome with the new Bucking and barrel I got with it! It comes ready to install and is just a plug and play really. It is on the expensive side but I personally think it's worth it if you have that kind of money. Would recommend to a friend.

"I Did not get my parcel yet the only reason I am writing this is that It will not let me do anything else on my account

"By far the best thing I did to my cyma m16 was this, a barrel and a bucking. I picked up ~30 FPS and has much better range and accuracy. Much better adjustment over stock. Everything that a hop up does, this does it better.

"This is the best hopup unit on the market.

"Installed in an Sig Air MCX with a Laylax short barrel kit, one thing I noticed is it shoots consistently straight as an arrow! FPS is very consistent as well using the M120 stock spring. Using a Prometheus purple bucking and nub with a Prometheus 185MM inner barrel. Good product, very happy with the set up and results.

"Excellent piece of work. Slapped it in my VFC M27 and got a .2 joule power bump from it and it can work with a Modify Baton Ryusoku Flat Hopup Bucking to reach great ranges. Highly recommend it to anyone looking to bump their power and range up.

"Phenomenal!! Love the BB retention, feels quality, works beautifully!

"Works amazing upgraded to a bigger barrel adjusted it and still works amazing love this hop!

"This is a great hopup, gave me a 15-20 FPS boost and is really easy to install , i recommend the atlas bucking 60*, overall highly recommend.

"Great chamber. Use in my CXP15 (I know the MI is what should be used but I had this and can confirm it works).

Only mod needed to be made was removal of the springs on the bb retainer. It's a great idea but that seems to be the main issue sticking this in an ICS chamber. The magazines just can't stay in place satisfactory enough and cause misfeeds. Holding the mag in place works but not a sustainable idea. Removing the springs instantly fixed the problem. I'd like the feature more but the chamber is of great value than that singular feature.

Used with G&G green and have very good results. Very satisfied.

"Just installed this in my gun. Immediately noticed increase in accuracy and precise shot placement. Will be experimenting with the RHop nub

"Super easy to install, even for someone new to airsoft. Put this in an Avalon Saber Gen 2 and it was a breeze. Good quality, and a worth while upgrade. The viewing window, and BB latch are nice touches as well.

"impressive increase in accuracy. super easy to install. and overall looks very professional. Strongly recommended this as one of the first things to upgrade .