For Sale MP5k Choate side folder $240.00 Greer, South Carolina 0 545 gm replied Sep 22, 2023 HK LONG GUN TALK jtb33 May 26, 2022 MP5K Choate/HK folding stock - is there a way to improve the spring to keep it folded in? I have the retro Choate-made MP5K stock on my MKE ...