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Posted: 5/8/2004 10:03:09 AM EST
Is it just me or does the ARMS 40 not fit under the ACOG NSN not as well as advertised? I can feel it leaning on the sight a little. Does anyone else have this problem?
Link Posted: 5/8/2004 10:17:20 AM EST
does your 600m aperture have the horizontal cut on the top of it?
Link Posted: 5/8/2004 10:18:53 AM EST
Hence the ARMS #40-L...


Link Posted: 5/8/2004 10:49:29 AM EST
yeah it has the cut.

I know about the 40L model but I thought that the regular 40 was supposed to fit under it anyway.
Link Posted: 5/8/2004 10:55:42 AM EST
The regular ARMS 40 may or may not fit depending on how the tolerances stack if you use the TA51 mount. You have to use the ARMS #19S or #19ACOG mount for a guaranteed fit.
Link Posted: 5/8/2004 11:05:27 AM EST
Thank you! I think i'll pick up a 19S right now! I have a RAS II, so I'm wondering if the 19S is the same length as the standardflat top mount for ACOG?
Link Posted: 5/8/2004 11:58:21 AM EST
While I personally use the FF RAS MRE I can assure you that the 19S will accomodate both of your needs in fit on your upper and clearance over your #40. Here's my gun, however it's a KAC 300 mtr. BUIS instead of the ARMS.

Link Posted: 5/8/2004 12:20:03 PM EST
Link Posted: 5/8/2004 12:33:49 PM EST
I have the 19s and the 40 and they fit fine
Link Posted: 5/8/2004 12:38:01 PM EST
[Last Edit: 5/8/2004 5:47:36 PM EST by CJan_NH]
TA11D w/ARMS #19S+#40

Link Posted: 5/8/2004 3:53:03 PM EST
[Last Edit: 5/8/2004 3:53:31 PM EST by phobia]
My new TA31F with its TA51 flat top mount fits just right.
Link Posted: 5/8/2004 6:04:26 PM EST
My TA31 with ARMS 40 fits okay. (not much room left though)

I'd like ARMS 40L if it is going under ACOG. 40/40A if going with reflex type sight.
Link Posted: 5/10/2004 5:29:12 PM EST
When I had the NSN on my M4 the ARMS 40 fit perfect underneath it.

Link Posted: 5/10/2004 6:34:16 PM EST
Link Posted: 5/11/2004 2:07:09 PM EST
Thanks for all the help and the great welcome guys!

new-arguy - You addressed the last concern I had about the RAS II. I think I should have been more specific in what I was asking (ie. if the ARMS 19S mount will fit between the RAS II aimpoint hump and the rear sight). I'm glad you could understand my internetlish. Thanks again.
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