bcm jack is just a bcm with slightly upgraded trigger and badass geiselle mk1 rail
no upgraded bolt, intermediate gas, ambi lower, two stage trigger if I recall
to make a super jack you would want an lmt enhanced bcg, A5 buffer, and G trigger
Printable View
I purchased my first KAC this year after saving for a while to get it. It is a very well engineered machine, and is an absolutely amazing rifle to shoot. There is not a better AR style rifle out there today, and you will not be disappointed.
Technically you could assemble your own SR15, sourcing all the correct individual parts needed to do it correctly is the challenge. https://uploads.tapatalk-cdn.com/201...01f60064da.jpg
Sent from my SM-G935T using Tapatalk
You'll get more likes if you #hashtag KAC SR15.
It's a proven fact.
Along these lines, I have a KAC stripped lower and have been planning to build it with the A5, SSA, Sionics LPK. Would you guys recommend building the lower as planned and picking up a 16" Mod 2 upper or buying a complete rifle? Thanks
BCM makes a high quality gun. It will run more ammo than you can afford. The KAC has a longer gas Sytem, smoother impulse. It has a great trigger, full ambi....the KAC has many features the Jack does not. Doesn't make the Jack bad, but for what you get the KAC is very fairly priced IMHO.
PB
I have a Mod2 on order. The more I think about it the less I like the gas system. My unfounded concerns are that the hex nut holding the gas tube in can work loose and i can't remove the rail myself to service it. Well I could with the addition of a bunch of proprietary tools.
The feeling of not being able to wrench my own stuff annoys me a bit.
Call Knights up and ask how many gas tube screws have come loose. If it has happened, I bet they've heard about it. If it had happened, it'd most likely be known by at least one of the guys posting in this, or other KAC-related threads, but call them anyway.