Now in stock at WGC Shop is the Azimuth Adjustable Stainless Steel Super Recoil Kit for Umarex/VFC 416 GBB. They also say that it can also be used for the VFC M27 IAR GBB as it uses the same system.  This has an adjustable Buffer Length, Secondary spring for high speed return, and backing plate for crisp blowback action.

Modify sent in information about their new Tremors 2 Recoil Kit which is an improvement on their first release with a separate hammer and hammer guide with a guarantee of even more realistic recoil for your AEG. Photo above shows the original Tremors Kit installed with the full video right below the Tremors 2 information... "How are you recently? I hope that everything are going well with you. Here I would like to introduce you our Tremors 2 Recoil System for M4 Carbine.

With the KWA KRISS Vector GBB SMG now available at WGC Shop for US$304.00, Leo presents an upgrade kit to improve the realism when firing the gas blowback. A custom recoil shock kit is presented in the video below showing an even better recoil action with the kit installed. No news yet on the third party vendor making the kit, but it may just be Angry Gun.

Tazz and Tim of RWTV go to the RedWolf Labs to check out the Angry Gun M4 Recoil kit made for the WE M4 Gas Blowback Rifle. Using almost, but simpler, the same method as another upgrade parts company from Taiwan, they'll show you if the recoil kit is better than the default system, and of course, how to upgrade your WE M4 GBB with it.

Angry Gun is on a roll with their upgrade kits as they have been releasing left and right new products to make a gas blowback airsoft user happy for the rest of the year. The video below shows their 300% Recoil Kit install in a KWA LM4 Gas Blowback Rifle and indeed the recoil is strong which might be a little bit unwieldy for some and think that it's a jackhammer.

A video sent to use by Public Enemy on the Angry Gun Super Recoil Kit and Bolt Carrier for the Magpul PTS Masada GBB with an explanation on why the kit was developed... "Before the launch of the BETA PROJECT + PTS Masada ACR GBB, original the ACR Recoil is very unsatisfactory (almost to say no recoil), therefore Angry Gun designed made a kit design, with two upgrade parts to improve  the performance of the GBB.