RCM RCM-GP-LP70 #24 90-degree LO-IMPULSE locking piece for .40 S&W and 10mm HK roller-lock firearms.
The #24 90-degree locking piece is recommended when shooting LO-IMPULSE (standard) ammunition with your MP5/40 or MP5/10 style firearm.
Originally developed for standard .40 S&W ammunition pressures, the RCM #24 90-degree locking piece may be used in MP5/10 10mm firearms when less locking delay is required in order to help the firearm cycle more reliably.
MP5/40 MP5/10 LP REFERENCE
- #24 90-degree LO-IMPULSE
- #25 60-degree HI-IMPULSE
- #26 80-degree MID-IMPULSE, unofficial