I attended the MP Armorers school not too long ago and the rep stated that for our issued weapons to replace the following parts at 5,000 rounds or 5 years:
1.) Replace Recoil Assembly
2.) Magazine Springs & Followers
3.) Trigger Return Spring
and for lubrication:
1.) 1 drop on each rail insert in the frame
2.) 1 drop on the muzzle of the barrel
3.) 1 drop on the top front corners of the barrel hood
4.) 1 drop on the tail of the trigger bar
This is what is stated in our Armorers manual and I thought it would be useful info to pass on to my MP family.
Semper Fi
1.) Replace Recoil Assembly
2.) Magazine Springs & Followers
3.) Trigger Return Spring
and for lubrication:
1.) 1 drop on each rail insert in the frame
2.) 1 drop on the muzzle of the barrel
3.) 1 drop on the top front corners of the barrel hood
4.) 1 drop on the tail of the trigger bar
This is what is stated in our Armorers manual and I thought it would be useful info to pass on to my MP family.
Semper Fi