JP reduced mass BCG and SCS

[MarkCO]

Can you do the same thing with a "regular mass" BCG and a lighter weight buffer?
It just seems to me that the buffer and BCG are always mated and moving together against spring pressure.
Does it matter which end of the pair the majority of the weight resides?
What am I missing?

You can get close, but not all the way there with a regular mass BCG. The normal forces on the JP are reduced, the surfaces slicker and the bearing area increased. A Teflon coated upper helps too. I run a JP low mass carrier, carbine spring and empty buffer to get to what I think is a slightly better (and with less mass than the SCS) recoil impulse than the complete JP set-up. I also run that in a system with the Nordic barrel, which I designed with a reduced diameter gas port, to eliminate the adjustable gas block.

Just this past weekend, had a guy start to have problems with his JP rifle. Turns out it was the gas block, time for a rebuild after 4K. That is just too soon for me.

You just have to remember that it is a system and all the parts interact including your load and grip (your interface to the rifle).

[Tim K]

That's the one Mark. Thanks. I have a backup rifle configured the same, and I thought I'd try some lower cost solutions.

[Kaiser.Shooter]

Another light weight BCG: http://www.aimsurplus.com/product.as...m=XAIMBCGTINIB