"This carrier would not fit in any of my uppers. Went in about 1.5\" and binds up solid. Returned to CTD."
"Reading the other review, I was concerned when I ordered this. However, it was a good deal on a fully assembled bolt and carrier group that I needed, so I bought it with fingers crossed, hoping it would work and fit. I just got the bolt carrier group today and threw it in my AR and it seems to fit fine. Maybe a little more snug than any of my other AR bolts, but it fits and it cycles. However, I did find that it didn't have enough oil and some parts were slightly stiff, due to this. The bolt itself seemed a little stiff when locking and unlocking (rotating), so I took it apart and oiled it. Now it seems to work just fine and will likely get a little more loose when I get about 100+ rounds through it. Since that is what happened with my take down pins, they were really stiff for about 100 rounds and then began to get a little more loose and easier to manage. Overall it works, fits, and cycles fine."
"Fits great. Wondering if the guy who sent his back lined up his cam pin? Mine hung up and caused me slight panic, but I pushed the bolt in and there ya go - cam pin lines up and everything fits. Still waiting for the barrel, so I can't give it 5 bullets unused, but it will be fine."
"First time out was for a zombie shootout, and after 200 rounds, it worked flawlessly. Fit was perfect and easy to install. The black finish looked good on my AR, as opposed to the chrome my son's had. Very pleased and will buy again for my next build."
"Built a rifle with this BCG and fired several hundred rounds with it. No issues at all."
– Sudo Shell
"I bought this BCG for my first AR build almost 2 years ago. It plus a couple other parts I ordered at the same time all arrived in less then the allotted time (Great job CTD!) and was in perfect condition. I have fired over 2500 rounds with this BCG and have not had a single issue, impressive considering this is in my 3-gun rifle.Bottom line - I will use this BCG again in future builds and I will order it from CTD along with any other parts and accessories."