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Page AR-15 » Rimfire and Pistol Calibers
AR Sponsor: bravocompany
Posted: 10/11/2003 11:43:26 AM EDT
I finally got my Oly .45 magazine to feed my .45 upper with the liberal use of my dremel tool.  

Now I have a new problem. The bolt seems to be cycling too soon and ejecting hot gas and burning powder.  I am left handed and find it difficult to shoot with burning powder being sprayed in my face.  Will a heavier recoil buffer delay the blowback enough to help?  Does anyone make a block that covers the rear portion of the ejection port similar to the ASA or Colt 9mm?
Link Posted: 10/11/2003 3:55:55 PM EDT
[#1]
Why not just install the 9mm deflector parts as you have described? Should be able to get from RRA, Pete, ASA. I know the parts are listed at RRA' site.
Link Posted: 10/11/2003 5:34:40 PM EDT
[#2]
I will probably install the deflector but I am concerned about the action cycling before the powder is consumed.
Link Posted: 10/11/2003 7:41:12 PM EDT
[#3]
I experienced the same blowback of gasses and particles with my Olympic Arms PCR-45.  I installed the 9mm gas block and it cured my problems.  You can order the parts from Brownells.  You will need:

1. 160-302-029  SP62854 EJECT PORT COVER ASSY 9MM $12.44
2. 160-302-030  SP62851 GAS DEFLECTOR 9MM MODEL $12.44
3. 160-302-031  SP62769 GAS DEFLECTOR SPRING 9MM MODEL $4.38

You will reuse the ejectrion port cover spring, rod and E-clip.  Make sure you get the gas deflector spring or the gas deflector will flop around.



Link Posted: 10/13/2003 7:21:55 AM EDT
[#4]
Try some different ammo also.  My 9mm Oly spits a lot worse with certain ammo brands.

I am left handed and wear contacts, so I certainly feel your pain!  Get some shooting glasses.
Link Posted: 10/26/2003 2:49:46 PM EDT
[#5]

    I get a little spit from my .45 Oly AR upper also.  I've just always attrubuted it as a fact of life with a blowback rifle.  It is hardly a major distraction to me.  The upper functions perfectly and is quite accurate.  Hitting a man sized target out to 100 yds is quite easy.

later,
AJ
Link Posted: 10/30/2003 11:05:04 AM EDT
[#6]
You might get some benifit from a heavy 9mm buffer.  It might delay the extraction long enough to lower the pressure in the chamber.
Link Posted: 11/3/2003 3:35:47 PM EDT
[#7]
I added a heavy buffer to my AR-45 and it felt better. If you use the heavey buffer make sure you use the spacer for the full length buffer tube.
Page AR-15 » Rimfire and Pistol Calibers
AR Sponsor: bravocompany
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