01-28-2022, 04:26 AM
Based on my conversation with rep from Gibbz a few years ago, they were machining most everyone's left side-charging upper receivers that were then rebranded/sold under various brand names (PSA, New Frontier, Spartan, etc). From my experience building side charging AR9, the big issue was last round hold open, which was tricky for AR9 but not an issue on AR15.
It was something different and maybe a fun toy at range, but it would be a snag issue. Also, because it is non-reciprocating you have to manually advance the charging handle forward into it forward position. It was less hassle to slingshot the standard rear bolt handle on AR15. I got rid of the side charging upper pretty quickly.
https://www.gibbzarms.com/product/g4-sid...ht-handed/
It was something different and maybe a fun toy at range, but it would be a snag issue. Also, because it is non-reciprocating you have to manually advance the charging handle forward into it forward position. It was less hassle to slingshot the standard rear bolt handle on AR15. I got rid of the side charging upper pretty quickly.
https://www.gibbzarms.com/product/g4-sid...ht-handed/