Page 4 of 14 FirstFirst ... 23456 ... LastLast
Results 31 to 40 of 132

Thread: Samson Evolution Rail-First Impressions.

  1. #31
    Join Date
    May 2010
    Location
    Reno, NV
    Posts
    217
    Feedback Score
    8 (100%)
    Quote Originally Posted by Boss Hogg View Post
    Why is that?
    I don't know, but my guess is that the slot is not mil spec.

    http://en.wikipedia.org/wiki/Picatinny_rail


    EDIT: Upon further research, it looks like the rails with a slot cut into them would not be standard according to NATO Accessory Rail STANAG 4694 spec. New spec uses the whole top surface as mounting interface.

    Last edited by dennisuello; 01-11-11 at 17:06.
    NevadaGunOwners.com | Reno4x4.com | GOA Life Member

  2. #32
    Join Date
    Jan 2010
    Posts
    2,321
    Feedback Score
    22 (100%)
    Quote Originally Posted by Boss Hogg View Post
    Speaking of rails, what would have been a better option is to have the add-on rails bolt directly into threaded holes in the tube. Those backing plates are a royal pain in the ass, especially if you're putting them in the middle of the tube. This would also get the rail closer to the tube for as slim a profile as possible.
    I don't think that's a realistic option. Not only is the aluminum tube too thin to be threaded but you'd also have to have threaded holes at every possible location which would be cost prohibitive. Even if you could reinforce the threaded holes it would still be costly and cause unnecessary weight.
    Last edited by Waylander; 01-11-11 at 22:34.
    "If force can take away liberty, force is necessary to preserve it. It is the hatred of violence alongside the willingness to use violence that preserves liberty. In order for us to live as free men, we have to hate the violence that takes away liberty, yet at the same time, we must embrace the violence that preserves it. That is the paradox our founders appreciated and made work for over 200 years."

    -Christopher Brownwell

  3. #33
    Join Date
    Jun 2008
    Location
    Edmonds, WA
    Posts
    1,845
    Feedback Score
    1 (100%)
    Quote Originally Posted by justin_247 View Post
    I'm still waiting for an answer to this question.
    Mounts like the Larue, ADM, and Bobro use the middle part of the rail to index and help hold the mount in place.

  4. #34
    Join Date
    Mar 2008
    Location
    Fredericksburg, VA
    Posts
    4,859
    Feedback Score
    7 (100%)
    Quote Originally Posted by scottryan View Post
    Slot cut down the middle of the add on rails is unacceptable.
    Quote Originally Posted by Boss Hogg View Post
    Why is that?
    One reason that leaps out to me is that some optics and the like use a bar or a shroud that goes over, say, the tensioning screw and traverses the entire width of their rail interface. We colloquially refer to this as a "recoil lug."

    When the device is being mounted, one applies forward pressure to the device and closes the gap between the front of the recoil lug and the rear of the forward bar of the rail slot. Closing this gap ensures that there is no room for the device to move under recoil impulse. For devices that have a rail interface that depends on screwed or otherwise torqued-on tension to be secured, this is important because if there's a gap, recoil impulse can shake things loose and result, for example, in an optic losing its zero and perhaps eventually falling off entirely if the condition isn't detected. If the recoil lug traverses the entire width of the rail, cuts in the rail are of no impact.

    Other rail interfaces, such as LaRue, just to throw out an obscure name, use recoil lugs that rest in the middle of the rail interface instead of the entire width. If one cuts gaps into the rails wide enough, there's nothing for that recoil lug to rest against. You end up relying solely on the tension applied by the rail interface of the device, without the added security of the recoil lug. I'd call that completely undesirable even for a flashlight mount, much less something I'm applying a zero to.

    I freaking hate gun-vehicle analogies, but think for a moment from the standpoint of you having to lift up the front end of your car to install your bare-foot-shaped gas pedal. Are you going to rely on your parking brake, or chock the rear wheels, too, to keep the thing from crushing you?

    Those cuts look pretty wide to me, so I'm also leery without having had a chance to measure anything. It's troublesome.

    EDIT: Spam hit it with fewer words than I.
    Contractor scum, AAV

  5. #35
    Join Date
    Aug 2007
    Location
    Florida
    Posts
    2,239
    Feedback Score
    14 (100%)
    The top rail does not feature any cutouts.

  6. #36
    Join Date
    Oct 2006
    Posts
    902
    Feedback Score
    1 (100%)
    ACOGs and magnified optics are always on an upper receiver, while you do occasionally (but very rarely) see a red dot that's on a handguard. So I personally wouldn't blow a gasket over the 3/6/9:00 accessory rails having a slot.

    What I've found more unacceptable about the Samson Evolution is that it has an unbelievable amount of flex because of the tube to barrel nut interface. Even the one that they showed at SHOT did, according to my gunsmith.

    Hopefully they'll fix that because Apex's system is much more rigid.
    Last edited by Boss Hogg; 02-01-11 at 21:57.

  7. #37
    Join Date
    Nov 2010
    Posts
    33
    Feedback Score
    1 (100%)
    I was all set to order the Troy and then this came out. Now I'm totally unsure which way to go. Hopefully I'll get my hands on one of these soon to compare.

  8. #38
    Join Date
    Aug 2007
    Location
    Florida
    Posts
    2,239
    Feedback Score
    14 (100%)
    Quote Originally Posted by Boss Hogg View Post
    ACOGs and magnified optics are always on an upper receiver, while you do occasionally (but very rarely) see a red dot that's on a handguard. So I personally wouldn't blow a gasket over the 3/6/9:00 accessory rails having a slot.

    What I've found more unacceptable about the Samson Evolution is that it has an unbelievable amount of flex because of the tube to barrel nut interface. Even the one that they showed at SHOT did, according to my gunsmith.

    Hopefully they'll fix that because Apex's system is much more rigid.
    My rail has ZERO flex.

    In fact i had a muzzle device come loose a few weeks ago and i had to torque it back down with a knife blade and hand pressure. The rail didnt move a millimeter despite the fact that it was clamped between my legs and i was "herculesing" the crap out of it.

    Now, im running an 11 inch ral. There is a possibility that the longer rails do exhibit some flex but ALL longer rails do to some degree.

  9. #39
    Join Date
    Sep 2009
    Posts
    101
    Feedback Score
    2 (100%)
    so you have a preproduction model; do you have a connection w/ Samson? Reason I ask; are they planning on ano'ing them in any other colors than black?

  10. #40
    Join Date
    Sep 2009
    Posts
    49
    Feedback Score
    0
    Quote Originally Posted by scottryan View Post
    Slot cut down the middle of the add on rails is unacceptable.
    I've seen the rail pieces for both the vtac/samson and they appear to be very similar. I wonder if it is possible to use the rail sections from the vtac and use the samson mounts.

Page 4 of 14 FirstFirst ... 23456 ... LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •