05-17-2017, 02:38 PM
How is a few companies not offering an external op-rod driven pistol an indictment of the gun industry?
External op rods in the AR15 are bad news in a number of ways, starting with the fact that they instantaneously initiate career movement while there is still significant pressure against the chamber walls.
You then have to add weight to the tail end and carrier as rate reducers, then add spring weight as well, causing more violent return to battery stroke in the cycle of operations.
Colt Canada engineers analyzed the HK416 on high speed camera, and said the problems with that design are so numerous, one wonders why they would undertake such a regression into 1920s piston operation.
External op rods in the AR15 are bad news in a number of ways, starting with the fact that they instantaneously initiate career movement while there is still significant pressure against the chamber walls.
You then have to add weight to the tail end and carrier as rate reducers, then add spring weight as well, causing more violent return to battery stroke in the cycle of operations.
Colt Canada engineers analyzed the HK416 on high speed camera, and said the problems with that design are so numerous, one wonders why they would undertake such a regression into 1920s piston operation.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com