Continental Customs HK MP5 .22 LR Drop-In FRT (PETG-CF)

The Continental Customs HK MP5 .22 LR Drop-In FRT (PETG-CF) is the cheapest way to try a forced reset trigger in the rimfire HK MP5 .22 LR, a different gun from the 9mm MP5 and SP5 with its own trigger layout. Continental calls it a cycle-actuated reset trigger: the bolt's cycle pushes the trigger forward into reset after each shot, and every round still takes its own trigger press.

The part is made from PETG-CF carbon-fiber-reinforced material in gray and black and holds its position by friction fit. Continental describes it as a true drop-in, in contrast to its permanent-install stainless version. Continental notes that some minor sanding or fitting may be required for individual guns. The maker is also candid that this first-generation friction-fit design did not have the longevity it wanted, which is why it developed the stainless permanent-install version.

Buy this one to find out whether you like a forced reset trigger in your MP5 .22 before spending more, or if you want a true drop-in rather than a permanent install. Buy the stainless version if you plan to keep it in the gun. Continental cancels orders from states that restrict forced reset triggers; verify current federal, state, and local law before purchase.