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Posted by: skerky10mm August 17th 2009 9:31 PM

i live very close to bangor and was looking at at a company there that makes ar-15s. while looking at there modular ar lowers i all most shat my pants when i saw that they have a 10mm lower! It takes glock g20 mag (witch is sweet because that's what i carry) and would be wicked if the mag extenders for the g21 made by kriss worked on the g20 mags. but i haven't been able to find any other parts to finish of the ar like a upper. do any of you know any thing about 10mm uppers??

Posted by: hwonderdog August 18th 2009 1:53 AM

I know OLympic arms makes a 10mm upper for the Ar-15 and a company by the name of Dalphon arms used to make one as well. BTW, the Kriss extensions dont work on Glock 20 magazines.

Posted by: dan10mmman September 29th 2009 4:12 PM

Olympic arms makes a fine 10mm upper., I love mine. I get a 400 to 500 fps increase over my glock 20, and with velocity comes a really flat trajectory. 25yds. to 200yds. is point of aim. check them out at olyarms.com. Thanks for the info on the lowers that use Glock 20 mags, I have been using grease gun mags in my pistol caliber AR's. To have a rifle and pistol that uses the same ammo has been a great idea since the 19th century, but to have them both able to use the same magazines is even better.

Posted by: RJW October 27th 2009 12:19 PM

Any Modification needed to the grease gun Mags for 10mm? I have a lower on the way that uses grease gun mags that I will match to my Olympic arms 45 upper. Would be great to use the lower for 10mm as well.

Posted by: michonrafw November 29th 2009 9:41 PM

Is there a mag well adapter for the g20 mags or is it a dedicated lower that can only accept g20 mags?
Ryan