So far I absolutely mine! I just got done with my video review of this adjustable buffer and I think you would be amazed of the results with a 10.5” AR pistol with 5.56 & 7.62x39 upper with one single lower,,,, Safe to say I need a new spring tho and I’m rather sure it is shot and need to lower the weight of the adjustable buffer downz. And maybe an adjustable gas block but I’m trying to keep the price down for an AR pistol that cost me less than $580! Accuracy for the money spent on these PSA AR pistols for your AVERAGE consumer is thru the roof as in this video if you watch the whole damn thing LOL. Check out my video review here!