What are some mechanical differences between roller-locked and roller-delayed firearms? What parts or mechanisms make it 'delayed' as opposed to 'locked'? - Quora
![Roller Latch Door Lock For Single-leaf Doors Stainless Steel Lock With Key Action - Buy Roller Latch Door Lock,Lock For Single-leaf Doors,Stainless Steel Lock With Key Action Product on Alibaba.com Roller Latch Door Lock For Single-leaf Doors Stainless Steel Lock With Key Action - Buy Roller Latch Door Lock,Lock For Single-leaf Doors,Stainless Steel Lock With Key Action Product on Alibaba.com](https://sc04.alicdn.com/kf/H227c18f3ae1d42aa815db2f846d155ec6.jpg)
Roller Latch Door Lock For Single-leaf Doors Stainless Steel Lock With Key Action - Buy Roller Latch Door Lock,Lock For Single-leaf Doors,Stainless Steel Lock With Key Action Product on Alibaba.com
![Passage Lock Roller Door Lock Roller Mortise Lock - Buy Roller Door Lock,Passage Lock,Roller Mortise Lock Product on Alibaba.com Passage Lock Roller Door Lock Roller Mortise Lock - Buy Roller Door Lock,Passage Lock,Roller Mortise Lock Product on Alibaba.com](https://sc04.alicdn.com/kf/HTB1zNW5LXXXXXc9XpXXq6xXFXXX5.jpg)
Passage Lock Roller Door Lock Roller Mortise Lock - Buy Roller Door Lock,Passage Lock,Roller Mortise Lock Product on Alibaba.com
![High Security Aluminum Door Lock / Narrow Lock with Roller / Lock Body (6000RS) - China Door Lock Body and Door Lock High Security Aluminum Door Lock / Narrow Lock with Roller / Lock Body (6000RS) - China Door Lock Body and Door Lock](https://image.made-in-china.com/2f0j00gGNRDUWdZFoc/High-Security-Aluminum-Door-Lock-Narrow-Lock-with-Roller-Lock-Body-6000RS-.jpg)