For a second semi-auto, I'd love to have a Kal Tec RFB bullpup but the only person I know who has tried one is a gunsmith and said it had a very uneven trigger that broke a bit different round to round. He didn't know whether that could be straightened out with an adjustment or if it was intrinsic to the rifle. It may be intrinsic to the bullpup design since I heard the same thing from a couple of Brits about their bullpup years ago. I wish I could afford something along those lines, though, it would be a lot easier to handle and it does have a magazine rather than a clip.
JMHO
Might just be that individual weapon. The RFB uses a different trigger system from any other bullpup and it’s supposed to eliminate that problem.
Of course, it didn’t help that the SA80/L85 the Brits used is an unreliable pile of crap that even H&K tried to fix and failed to totally succeed at.
See: http://en.wikipedia.org/wiki/Kel-Tec_RFB
“To avoid sloppy trigger pull typical of firearms modified into bullpups, the RFB utilizes a floating linkage bar between the sear and the hammer, allowing the sear to remain above the trigger.”
Also, this is what Keltec said when someone enquired as to the trigger system:
‘The RFB’s Trigger group has also been designed from the get go to be a match trigger. It includes components for adjusting take-up, over-travel, and Trigger spring tension.
The Standard model which is being produced has non-adjustable components which replace the adjustable ones in their optimized positions. These will be able to be changed out for adjustable ones at a later date if the customer desires, but the Standard RFB is guaranteed to have a trigger pull between 4.5-7.5 Lbs, with minimal take up and over travel. We have yet to encounter another bullpup with a trigger that is even in the same league. The RFB’s trigger is better than most conventional semi-auto rifles, as anyone who’s handled one will affirm.”
So either it was fitted with badly adjusted parts, or it was just a bad one. The ones I’ve shot exhibited no such problem.