Gas block and tube. From the purchasing to receiving the… From the purchasing to receiving the items I must say I am impressed. I received email confirmation of the order status of shipment, tracking information and confirmation of delivery. This is how it should be done. Product was shipped the same day as ordered. I will definitely be shopping here again.

Great customer service. I ordered the wrong part by mistake. Contacted customer service and they graciously canceled that order. Didn't even ask if I wanted to order a different part. I did however order another part a couple days later. Item showed up quickly.

Revised review I cancelled my order because Fedex was the problem not Dirty Birds. Fedex was to deliver by 12/3 and did not Then I was told by Fedex they could not find my package so based on their information I cancelled my order. Now Fedex found the package but i already cancelled. This issue was NOT Dirty Birds fault. It was all on misinformation from Fedex.

I’ve never experienced better customer… I’ve never experienced better customer service when buying a firearms part. I bought the dirty bird ambi lower. Alex communicated with me by email very promptly. He let me ship them an HRF concepts RCM (the polymer thing that clamps on the magwell to make it super flared) to ensure fitment was good, which it was. He included the RCM in the box when he shipped out the ambi lower to my FFL. I’ve yet to assemble to lower, but it seems to be very good quality with very nice controls, and I think it’s probably the most slept on lower in the industry.

Super impressive service Super impressive service, listing was correct and accurate. ship as promised, and product exactly as I had wanted. I will look forward to doing additional business with this company! 5+ rating!