Cool, some good feedback. I'm having a hard time finding a buis where i dont mash my face against butt to get a good sight picture. Ill compare weight. Height over bore is a good point to bring up it does raise it another 1/4 inch and its already high as it is.
**edit looked on zahal andnthey say the razor back is lighter than te factory rail***
What do you mean by chamber checks and clearing easier? I was looking at the opposite side of the ehection port. Just looking for a better seal on the left side. Ive run both single and double slings and im definitely a two point preference so its strictly for gas control
Lastly, yea ill look into the weight again. I do prefer a light on all my firearms and the accessory rail is not a great option. I was thinking that a metal foregrip wouldnt be bad as i shoot with gloves (i have a tendency of bleeding during manipulations lol) and i thought the foregrip would heat up like a quad rail. And finally i shoot in vancouver area. -2 and rain is a catastrophic shooting situation for us lol
Use the factory BUIS that are built into the rail. They are only for back up anyhow and with a decent optic you should never need to use them!
The first thing I would do to modify the ergonomics is swap out to a Manticore Buttpad. They are not that expensive and really alter the whole ergonomical structure of your cheekweld enough that it may make having an aftermarket rail unnecessary for you. It also depends on the sight, some sights are designed specifically to fit the AR where there is approximately a 1/4" rise in height between the stock and rail height where as on the Tavor the stock and rail are all in line, so lower height sights that are design-based on the AR platform such as a Elcan Specter DR, Eotech XPS-2/3 and Trijicon ACOG Series as well as most BUIS. Then you have sights that work relatively well for the OEM height rail regaurdless of buttpad mods such as the Mepro M21, Eotech EXPS-2/3 and of course higher scope rings are an option.
The reason I said all aftermarket rails (to date) are heavier is because your factory rail has BUIS built into it that everyone seems to forget also add weight when you additional BUIS to your new rail. I have had the GHW full length and short Razorbacks. The long Razorback is definatly heavier than the OEM flat top rail (which has BUIS built in), the short Razorback is lighter than the OEM flat top, however if you factor in a Troy Rear flip up, and GHW front sight post, it becomes heavier than the OEM flat top.
The lightest possible solution with BUIS that I have found is a chopped factory rail still containing the rear integrated BUIS with the addition of the of the GHW front sight post.
As far as the reasoning of running with both ejection ports open, consider this: when you do a mag change on the AR, you first roll the rifle counter-clockwise to check the chamber, then either you roll or flick it clockwise while pressing the mag release to drop the empty mag and re-insert a fresh mag. For a Tavor due to the position of the mag release you can not comfortably or reliably drop the mag so you must strip it, as such the flick from a counter-clockwise to clockwise motion has no advantage, however if you roll it clockwise without un-shouldering it, you can check the chamber and strip the mag at the same time as there is one less motion. TV-PressPass first offered me this explaination when I seen him doing it it made so much sense I had to try and have not looked back. He also suggested that there are 2 ways to deal with gases:
1) hold them back as best you can
2) offer a rapid dispersion off the gases to avoid concentrated bursts.
So far I have had better luck running both open than with the OEM or GHW port cover. It also allows for quick lefty/righty conversion, and the more options you have to dig casings out and ckear the action.
Have another look at my Tavor on page one to get an idea of how to pack as much features into 9lbs 15oz as possible in the Tavor platform.
