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10/20/2017 1:01:18 AM
9/22/2017 12:11:25 AM
Posted: 9/8/2005 8:02:13 AM EDT
I asked this before here and just got a "it should work" answer ....Can you use a upper with a standard case deflector on a 9mm build ?? Like an A4 flattop. Is anyone currently running a 9mm AR with an A2 varient case deflector ? This ar15 link http://www.ar15.com/forums/topic.html?b=3&f=15&t=249178 points to a Oly combo without the clamshell. I'd like to build a matching MEGA upper/lower but do not want to get brass bouncing off my glasses. I appreciate the education. HHjr
Link Posted: 9/8/2005 8:06:41 AM EDT
Sure....

The OLY uppers don't have the goofy added deflector. And neither does my .45 AR. Never had problems with getting hit by brass, and i'm a southpaw.
Link Posted: 9/8/2005 8:14:59 AM EDT
i shot my colt this past weekend and about 80% of the casings didnt even bounce off the deflector
Link Posted: 9/8/2005 8:39:17 AM EDT

Originally Posted By HHjr:
Can you use a upper with a standard case deflector on a 9mm build ?? Like an A4 flattop. Is anyone currently running a 9mm AR with an A2 varient case deflector ?

Stick the 9mm barrel into the front of the upper and have a nice day. I been using a mystery made funshow flat top upper for almost 3yr, Colt pattern operating system, and my empties leave at forward- slight upward angle to the right front.






Link Posted: 9/8/2005 8:40:27 AM EDT
It's a "gas deflector," not a "brass deflector." And yes, it does help somewhat, especially if you're using a suppressor.
Link Posted: 9/8/2005 10:20:50 AM EDT

Originally Posted By kc3:
It's a "gas deflector," not a "brass deflector." And yes, it does help somewhat, especially if you're using a suppressor.



+1 9MM are blowback and this was designed to be a "gas deflector".
Link Posted: 9/8/2005 11:13:59 AM EDT
Well....I beg to differ in my case.

My Oly upper did not come with a gas deflector, and I was getting a bunch of junk from the ejection port. I'm a lefty.

Added the deflector, and look at the damage to it after 300 rounds.



I'm a happy camper now. The deflector is cheap and easy to replace.
Link Posted: 9/8/2005 3:49:15 PM EDT
I appreciate all your comments, the time it took to post the pics And the technical correction as well . Thankyou. Harold H.
Link Posted: 9/8/2005 6:35:31 PM EDT

Originally Posted By tvone:
Well....I beg to differ in my case.

My Oly upper did not come with a gas deflector, and I was getting a bunch of junk from the ejection port. I'm a lefty.

Added the deflector, and look at the damage to it after 300 rounds.

i16.photobucket.com/albums/b9/tvone/deflector.jpg

I'm a happy camper now. The deflector is cheap and easy to replace.



Where can one aquire one of them? I'm a lefty too ,and do get some gas blockback on my .45 AR.
Link Posted: 9/8/2005 7:05:16 PM EDT
Specialized Armament, Gun Parts Corp, Brownells, the usual suspects. Obviously, you'll also need the 1/2 port door. there's also a little spring that holds it in place against the upper.
Link Posted: 9/8/2005 8:10:25 PM EDT

Originally Posted By kc3:
Specialized Armament, Gun Parts Corp, Brownells, the usual suspects. Obviously, you'll also need the 1/2 port door. there's also a little spring that holds it in place against the upper.



holy cow!

definitly gonan give that a try when i get back.

For those interested, Brownells part numbers:

160-302-030 Gas Deflector $12.44
160-302-031 Gas Deflector Spring $4.38
160-302-029 Ejection Port Cover Assembly $12.44
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