midwestpredator
Active member
Once again I am revisiting the topic of a 223 ai ar15. Once I get an idea in my head I usually need very compelling evidence that it is a bad idea and so far all i can find is peoples "claims" that it wont feed. Now on the other hand, i cant find anything solid that shows me it will feed and function.
During my search last night I came across a couple of articles on rifles built by lee mosher of Insight Shooting Systems inc. (ISSI)
http://www.smallarmsreview.com/display.article.cfm?idarticles=1557
https://www.tactical-life.com/firearms/insight-shooting-systems-coyote-hunting-ar/
https://www.thefreelibrary.com/Pumping+u...y...-a098124201
A small excerpt from the last link:
Other Details
In the course of firing some 200 rounds of standard 223 Rem. and 300 .223 AI cartridges the ISSI unit functioned perfectly.
"The AR-15 is almost perfectly suited to feeding the 40-degree case," Mosher commented, "better than most bolt guns."
Something I like to see with any semi-auto, rifle or pistol, is a consistent ejection pattern. Wanting to recover the cases while shooting the .223 AI unit from the bench, I noted where the first case lancteci, then set a range bag on the spot. From then on, just about every case ejected from the ISSI unit went spinning neatly into the bag.
Mosher does a lot of tuning and fitting to ensure smooth functioning. He found that the bolt locking lugs at the 1:30 and 3:00 positions tended to scratch cases. Relieving the edges of the lugs not only stopped the case scratching but led to a more consistent ejection pattern.
Latest Developments
Although both prototypes functioned reliably, Mosher felt the feed/ejection cycle could be smoother. On current models he slightly reduces the gas port diameter, and he now uses a Les Baer bolt and bolt carrier (1/4 ounce heavier than standard), and a chrome silicon recoil spring buffer from David Tubb. The result, he says, is superbly smooth operation.
So, anyone know where I can go to find video or actual first hand experience with a 223 AI ar15?
During my search last night I came across a couple of articles on rifles built by lee mosher of Insight Shooting Systems inc. (ISSI)
http://www.smallarmsreview.com/display.article.cfm?idarticles=1557
https://www.tactical-life.com/firearms/insight-shooting-systems-coyote-hunting-ar/
https://www.thefreelibrary.com/Pumping+u...y...-a098124201
A small excerpt from the last link:
Other Details
In the course of firing some 200 rounds of standard 223 Rem. and 300 .223 AI cartridges the ISSI unit functioned perfectly.
"The AR-15 is almost perfectly suited to feeding the 40-degree case," Mosher commented, "better than most bolt guns."
Something I like to see with any semi-auto, rifle or pistol, is a consistent ejection pattern. Wanting to recover the cases while shooting the .223 AI unit from the bench, I noted where the first case lancteci, then set a range bag on the spot. From then on, just about every case ejected from the ISSI unit went spinning neatly into the bag.
Mosher does a lot of tuning and fitting to ensure smooth functioning. He found that the bolt locking lugs at the 1:30 and 3:00 positions tended to scratch cases. Relieving the edges of the lugs not only stopped the case scratching but led to a more consistent ejection pattern.
Latest Developments
Although both prototypes functioned reliably, Mosher felt the feed/ejection cycle could be smoother. On current models he slightly reduces the gas port diameter, and he now uses a Les Baer bolt and bolt carrier (1/4 ounce heavier than standard), and a chrome silicon recoil spring buffer from David Tubb. The result, he says, is superbly smooth operation.
So, anyone know where I can go to find video or actual first hand experience with a 223 AI ar15?