It’s been fun, I hope you can find your answers elsewhere. Good luck, and thank you for your support.

A few questions. First what is the twist ratio of the barrel? And/or prefered grain weight of ammunition? I saw you fired standard NATO ball, but is there a grain weight that is prefered/recommended?

Recommended BUIS?

Is there an available slip on stock pad for futher recoil reduction or is one in the works from Kel Tec?

Since this will be the “legacy” rifle from Kel Tec, are there going to be further options and additions in the future offered on this system other than those you have mentioned already? I.E more “goodies” such as additional rail interface systems for the carbine model, optional muzzle brakes, etc?

Thanks for the info already. Interesting enough rifle that I might end up purchasing one in due time.

Yeah, I saw your work over at http://olegvolk.livejournal.com/609459.html this morning. Thanks for posting them.

I’m hitting my forehead for not extrapolating out the “CFB” designation before now. I’ll probably buy one when they come out, but the RFB now and forever more has my attention. I’ve had the funds set aside for the better part of a year now, and I just wish one of the distributors would smile upon me and finally ship me one already.

Unfortunately, while the 7.62 may work as a Close Quarters/ Home Defense cartridge, it’s still a bit much IMHO. I wouldn’t mock anyone’s use of a 7.62 NATO with specialized ammunition in this role, but it’s not something I would do myself. I’ve always been more of a Shotgun man myself and there’s little arguing about the risk of over penetration with 00 buckshot, but the use of smaller pellets, like No. 4 would serve to greatly reduce this risk.

A 5.56 RFB, called the CFB is in the works. I was opposed to the whole idea, since there are already a host of 5.56 Bullpups and the CFB will directly compete with the RFBs market. It will take a few years though, so don’t expect to see one anytime soon.

@ Robert Harder:

The previous casing does get in the way. They stack up in the ejection chute and push each other out of the front, unless the operator tilts the weapon forward, and dumps them out. There are wings at the back of the chute that keep the shells from sliding backwards and falling into the action. The fired case is tilted upwards during rear ward travel and held firmly by the extractors. It is then pushed into the ejection chute where it passes the wings which pinch the casing as it is pushed through. Any case or series of cases in the chute will not create enough resistance to cause a stoppage. The part that uses the most energy is when the carrier has to force the extractors down off of the rim when the case is in the chute. A nose on the carrier then pushes the empty case the rest of the way through the wings on the chute, ensuring that there is no way the case can fall backwards. Inertia then causes the cases to remain stationary as the rifle moves backwards, giving the empties a kind of forward momentum. This will happen no matter what the rifle’s attitude.