Surefire X300 on DD FSP?

[m4brian]

Is the switch so close to the FSP that you will have to use gloves?

[kartoffel]

Unless you have munchkin sized thumbs, there is no room to wrap your thumb over the top and rest it at 12 behind the X300. Rest you support hand thumb pointing forward at 11 or 1 o'clock and it's fine.Gloves will let you finger**** the FSB any way you like while its hot, but it won't create room to rest your thumb between X300 and FSB.

If you really want a coolguy thumb overtop grip, try choking up and holding behind the FSB. Otherwise it's thumbs-forward along the side of the light.

[m4brian]

Question is: when running thumb on side, can you easily hit the light switch WITHOUT touching the FSP. That's all.

[jsummers]

There is a chance you might hit it, but it didn't happen to me when I ran an X300 like that. If you do without gloves on, you'll notice it right away.

[m4brian]

Ok - so you still HAVE to use gloves. Thanks.

[kartoffel]

Question is: when running thumb on side, can you easily hit the light switch WITHOUT touching the FSP. That's all.

Well... you can hit the switch without getting burned. It helps to have a handstop/VFG/AVG/something on the rail at 6 o'clock so your hand indexes at the same place every time.

If there was a way to slide the X300 just one or two rail slots farther forward, it would give enough clearance to lay a thumb over the rail at 12 o'clock in front of the front sight.

[Kchen986]

Does the X300 require you to seat the light further back? For what it's worth, I mounted my TLR-1 further forward on my DD 13" FSB so I could rest my thumb up there. I haven't been burned in range sessions, but I've never done break-contact type drills with this particular carbine.

https://lh4.googleusercontent.com/-q9sOTozRMZ8/TgURA8WDlKI/AAAAAAAAB7k/ouxi7K1bnkE/s720/DSC_0440.JPG

Hope this helps.

[TehLlama]

I do see the advantage in getting the RIS-II flavor of the FSP rail for this application (half inch of rail length out front, and the raised bottom rail for better hand placement with the 12:00 X300), but I'm still pretty confident that anybody who can fat-thumb something on a keyboard can pretty easily get ahold of the FSP.

[kartoffel]

RIS version's tucked-up 6 o'clock rail makes for less handguard to wrap your hand around.

This is what it a DD 12.0 FSP Lite (not RIS) looks like with an X300 mounted as far forward as it can go.

http://farm7.static.flickr.com/6158/6179722454_93882b83e4_b.jpg

Support hand thumb at 1 o'clock:

http://farm7.static.flickr.com/6159/6179200543_22ca31ea40_b.jpg

I wear large / x-large gloves. It's possible to wrap the thumb over behind the front sight. This would work better with a smaller diameter handguard such as the RIS, but it's not really a position I bother with.

http://farm7.static.flickr.com/6157/6179200837_5746f34fba_b.jpg

Best thing about a light at 12 o'clock, in my humble opinion, is that it's completely ambidextrous.

http://farm7.static.flickr.com/6178/6179726808_5f0d751dd6_b.jpg

[patriot_man]

If my hand is farther forward the rail closer to the end of the barrel I find that my thumb is comfortable with pressing the switch on the X300 and clears the FSB.

http://farm7.static.flickr.com/6165/6184038737_0f425ec718.jpg


With my bare thumb I can't activate the X300 with the side of the switch but with the traction provided by gloves it is very easy and the space between my thumb and FSB is even greater.

http://farm7.static.flickr.com/6163/6184043177_c4a68edd67.jpg


But if I move my support hand farther back my thumb will have to make up for that space and resulting in touching the FSB.

http://farm7.static.flickr.com/6163/6184036585_959fd341f7.jpg



All depends on support hand placement and thumb length.

[m4brian]

Gents: Excellent pics - thanks - they are truly worth a thousand words.

Makes me want to get an X300 at some point. It allows a VERY ambi setup. The only things is with this is that the high hand over the rail grip cannot happen well - but EVERY system has a drawback.