RA-Tech have sent in a couple of test videos:
Dear News Fairy, RA-TECH have made new product "6 01mm Precision inner barrel" which is be able to use for both Gbb and AEG, and as usual we done the test video for it, link as shown below,
RA-TECH also did the review of GHK Co2 mag, and you could check out via below link,
(RA-Tech)