Mean Arms' Bearing Delay System
Forgotten Weapons
•
19m
Mean Arms has developed probably the most refined and sophisticated 9mm AR delaying system on the market, what they call Bearing Delay. This began as an exploration into fitting HK-style roller delay into and AR, and ended up with a system using three spherical bearings to redirect chamber pressure to delay opening. The system is particularly well suited to high end competition use, where the development data form Mean Arms can be used in conjunction with different "lifters" (the equivalent of the locking wedge in a roller delay system), buffers, and ammunition types to tune the system for minimal muzzle climb and felt recoil.
Disclaimer: Mean Arms sent me this upper for filming. The lower assembly I provided myself.
Up Next in Forgotten Weapons
-
PSA/H&R Clones the Department of Ener...
Palmetto State Armory, under their Harrington & Richardson brand, has released a particularly neat model of 9mm AR. They talked about doing this "at some point" at SHOT Show 2024, but lo and behold it's here and available on the cusp of SHOT 2025! Specifically, this is the Colt 633, an extra-shor...
-
Experimental AG-42B Conversion to 7.6...
Circa 1954, Sweden was starting to look for a new self-loading rifle to adopt for its infantry. The 6.5x55mm cartridge was a good round, but the idea of having ammunition compatibility with its neighbors was appealing, and NATO was standardizing on the new 7.62x51mm round. This rifle is an experi...
-
Domestic Burmese G3s: BA64 Rifle and ...
After achieving independence from the British, Burma (now Myanmar) looked to develop a domestic small arms industry to supply its armed forces. The first weapon produced there was the BA-52, a copy of (how they chose this I don't know) the Italian TZ-45 submachine gun. By the late 1950s, talks we...
