3 was not a charm - SB Tactical HK Side Folding Stabilizer Brace for HK MP5/MP5K RS Clones

This pistol brace was intended to use on an HK SP5. The first.brace was wrong item in box was for a SP5K (which does not fit the SP5) The second pistol brace I had to use a small plastic mallet to install stock rear pin, had solid lock up on when extended. Unfortunately the item arrived with markings that showed product had been mishandled That was returned for a replacement unit I was unable to install unless I modified the brace (drilled a larger pin hole) the lockup when extended was loose. So this item was also returned this time for a refund. Really nice product in concept but from my experience quality was hit or miss.