Just got this upper last week. Pulled off my 556 and put it on my spikes lower.
Would jam every other round with some crap called "tula ammo?".
Unloaded the Tula and loaded the mags with wolf. Shot like a charm, no probs.
I might like it better than my 556 upper. Gonna replace the handguards and buy another lower.
Then i'll probably pick up another caliber AR. Not sure which tho.
Steve
Edit: oh yeah, Yankee hill 7.62x39 upper on spikes lower. Primary Arms comp m3/4 (one of the numbers Idk which).


Would jam every other round with some crap called "tula ammo?".
Unloaded the Tula and loaded the mags with wolf. Shot like a charm, no probs.
I might like it better than my 556 upper. Gonna replace the handguards and buy another lower.
Then i'll probably pick up another caliber AR. Not sure which tho.
Steve
Edit: oh yeah, Yankee hill 7.62x39 upper on spikes lower. Primary Arms comp m3/4 (one of the numbers Idk which).