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2/21/2020 11:35:28 PM
Posted: 10/7/2007 9:42:12 AM EST
Thinking of getting a flat-top upper for my Colt 9mm. Any pics of the CMMG 14.5 w/perm flash hider out there? Thanks.

Link Posted: 10/7/2007 2:33:06 PM EST

Originally Posted By 5thLegion:
Thinking of getting a flat-top upper for my Colt 9mm. Any pics of the CMMG 14.5 w/perm flash hider out there? Thanks.


not yet getting a 14.5 with a vortex and a 12" dd lite rail built by them right now

Link Posted: 10/7/2007 5:21:01 PM EST
[Last Edit: 10/7/2007 5:38:12 PM EST by BillSP1]
I have that upper. Just got the lower built and the whole thing put together this weekend. I had family obligations so was unable to get it out to shoot it yet.

The upper is good looking and it really seems to make a diference in handling over a similar AR15 I have (in 223) with a 16" barrel plus A2 flash-hider. I had the Slash 9Q buffer and a Vltor clubfoot stock, all furniture in Coyote brown (or is it Coyote Tan?). It looks good and I a n anxious to shoot it thid being my first 9mm AR.

The guys here helped me figure out what is needed to build up a 9mm AR. I still need to ramp the bolt (to extend the life of the lower ans make it fun smoother), but will get a few rounds down the tube before this happens.

I would like to go SBR and later add a silencer, but for now the "no stamps need" version will have to do.

With the lower compete I was unable to fully rotate the upper into the lower. Inspection showed scraping on the rear lug of the upper as it tried to fit into the lower. I looked it over carefully and it appeared to be interference fit only on the back corners of the upper lug. I put some lube on the lug and attempted to mate the upper and lower again still too tight. Looked it over again and only then got the file out. Took all of 30 seconds to put a very slight radius on the rear sides of the rear lug and it fits fine now. Now I need to allodine the raw edges to prevent corrosion or just forget about it. This coud have been due to a slight radius in the lower lug recess, but as I had no simple way to "clean up" this area I simply radiused the mating surface. With both pins inserted the upper and lower fit snug all the way around now.

I am unable to post pictures at the present time...
Link Posted: 10/8/2007 3:05:52 PM EST
Billsp1 - That sounds like the direction I'd like to go too. I move a lot and I'm not sure a SBR is something I'd like to deal with right now. I'd really love to see some pics of that 14.5 upper if you get the chance. TM.

Link Posted: 10/8/2007 8:18:49 PM EST
5th Legion: IM mail imbound
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