I got this about a month ago and its been a great buy, i reccomend this to anyone still useing a elbow, above all the cost makes this a great buy, for around 20 bucks it should be one of your first upgrades.
The only problems i encouterd was the slight wobble of the hopper, about a quater inch rotation when you apply force to the hoppers side, it really isnt that big of a deal but its still their.
Also tighting the nut seems harder for me, not being able to find the right allen key but it should be easily over come
Conclusion:
Great upgrade, anyone looking for a good feedneck at a low cost, this it it