I bought this rifle at a local gun shop. I went in looking for and entry level AR-15 to customize. I talked a lot with the guys in there and in the end they recommended this Windham Weaponry flat top to me for the plans I had for my rifle. The original owner of Bushmaster started a new company and start producing this AR-15 under Windham Weaponry. I love mine. I have a bipod on mine and every time I shoot I am always in the middle of the silhouette with a 3" wide 'column' group. I'm not a regular rifle shooter so I am very happy with that group. Every shot is right down the center of the target with some climbing and some falling, but all are in the middle. The few that strayed left or right were definitely my fault and I called it out as soon as I let the shot go. I couldn't be happier with mine. I can't speak to the durability or longevity of the gun. I've only put about 100 rounds through it so far. I don't have a lot of money so ammo doesn't come very often. Great rifle though. Highly recommend for an entry level black rifle. It would be up to someone with more experience and range time with this rifle to offer a recommendation on the other tiers.