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Archived [ARCHIVED THREAD] - Locking piece question
Posted: 5/5/2022 8:07:17 AM EDT
Ok, new to roller lock platforms, so bare with me.   How does the degree of locking piece impact/influence these?  My ptr has a 100° locking piece, but I see 120° sd locking pieces and then guys mention running 80° in k models when suppressed.  I guess I'm having a hard time figuring out how they work.  Thanks

Link Posted: 5/5/2022 8:17:52 AM EDT
[#1]
Pretty good article on the HK locking piece.

HKPro Forum
Link Posted: 5/5/2022 8:26:01 AM EDT
[#2]
Short answer, the angle affects the mechanical advantage forcing the carrier to the rear.
Higher angle for more advantage and less dwell.  The SD needs this due to the porting creating very short dwell time.
Lower angle for less advantage and more dwell.  The non-ported, suppressed gun uses this to delay unlocking to reduce port noise.

Attachment Attached File

Link Posted: 5/5/2022 6:19:24 PM EDT
[#3]
Thank you, that does explain it well.

Archived [ARCHIVED THREAD] - Locking piece question
Page Armory » Heckler & Koch
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