Which locking piece do U guys use with a MP5/40 (clone) and 3lug Gemtech Raptor can, do you guys use the HI or LO LP when shooting with the can??
Thanks in advance. PeterNNH
Never shot mine with a can. That said, just going from what I think is the safest approach...try it first with a HI and see how well it ejects. If you get solid ejection (rather than dumping cases at your feet), I would go with that.
Buy both. Always start with the HI when you buy different brands of ammo. If gun will not cycle with HI then swap to the LO. I shoot PPU 180grain hollow points when going to the range. I use the LO with that brand.
I have a Coharie CA89-10mm and. Raptor can. All of my loads are in the 1200 FPS range. If you read the HK manual they reference Ammo based on impulse vs FPS. IIRC years ago I had some anemic factory that was around 1050 FPS which required the Lo LP. If you are using hotter 40 I would start with the Hi LP.