JP Enterprises JP-5 Lock Piece - 90Adeg 90Adeg Roller Bearing Angle A Proprietary Steel A Nitride Finish A JP-5 / MP5 Pattern A SKU: JP5-LP90 The JP Enterprises JP-5 90Adeg Lock Piece is an interchangeable roller bearing component for tuning the recoil impulse of the JP-5 roller-delayed platform. Proprietary steel with nitride coating for low wear and low friction. The 90Adeg angle is the highest available-recommended when the action cycles weakly or unreliably, or when running low-pressure ammunition such as light hand loads. Compatible with H&K MP5 and MP5 clones that accept H&K lock pieces. Validate bolt gap after installation. 90Adeg - Highest Angle The 90Adeg lock piece requires the least force to open the action. Recommended for systems experiencing weak or unreliable cycling, or when decreasing system pressure through shorter barrels, removing suppressors, or switching to lower-pressure ammunition. Proprietary Steel with Nitride Finish Manufactured from proprietary steel with nitride coating for low wear and low friction throughout the service life of the component. MP5 Platform Compatibility Compatible with JP-5 and H&K MP5. Compatible with MP5 clones that accept H&K lock pieces-not all MP5 clones are compatible. Validate bolt gap after installation as lock piece geometry may alter bolt gap. Specifications: Manufacturer: JP Enterprises Model: JP-5 Lock Piece SKU: JP5-LP90 Angle: 90Adeg Material: Proprietary Steel Finish: Nitride Platform: JP-5, H&K MP5, Compatible MP5 Clones Application: Higher angle - weak cycling, low pressure loads