Note: after purchasing this item i was intending on using it with my KWA H&K USP. unfortunately this conversion kit only works on umarex (assumption) products. when trying to fit it to my pistol I have had to undertake extreme modification. and am currently still working on it to make this kit functional. besides that the kit is nicely but together the stock is comfortable and places the sights in a very nice position, the forward grip is also well made if hollow on the backside. one thing that could use some reinforcement however is the main body after where the pistol grip would sit it likes to bend inward and rub on the slid preventing cycling of the action.
overall good quality flat black plastic
sights are clear despite their size
Many different pistol types can be used
Not compatible with KWA USP
assuming incompatibility with other GBB pistols that are not made umarex
reinforcement needed to prevent torsion buckling/flexing
more space needed for clean movement of the slide