I got to shoot a bushmaster top-loading carbine (TLC) yesterday, and it was a lot of fun. Yes, yes, I know. A sealed mag well is a cop out. I prefer to think of it as supporting bushmaster's rather cautious contribution to our cause.
A big worry I have heard expressed is what you would do with this rifle in case of a failure. We did have a couple of failures to feed the first round - "ride overs," where the bolt does not strip the round from the magazine when you manually cycle the charging handle. The sealed mag well did not pose a problem clearing this kind of failure. After a while the rifle loosened up and gave us no more problems. (It was a new rifle, just out of the box.)
Later, we replaced the carbon-15 upper with a CMMG 16" with a mid-length gas system. Everything functioned fine, but I did notice that the rifle didn't balance nearly as well as it did with the carbon upper.
One thing I noticed while cleaning the carbon-15 upper was the improved extractor. The extractor spring has the little o-ring "donut" around it, which I had heard about but never seen.
Also, the bushmaster flash suppressor actually works! We shot some after sundown and saw no "orange pumpkin" at the muzzle, even with the 16" barrel.
The lack of a forward assist an dust cover was never an issue, but we were shooting under rather sterile conditions at a range.
A big worry I have heard expressed is what you would do with this rifle in case of a failure. We did have a couple of failures to feed the first round - "ride overs," where the bolt does not strip the round from the magazine when you manually cycle the charging handle. The sealed mag well did not pose a problem clearing this kind of failure. After a while the rifle loosened up and gave us no more problems. (It was a new rifle, just out of the box.)
Later, we replaced the carbon-15 upper with a CMMG 16" with a mid-length gas system. Everything functioned fine, but I did notice that the rifle didn't balance nearly as well as it did with the carbon upper.
One thing I noticed while cleaning the carbon-15 upper was the improved extractor. The extractor spring has the little o-ring "donut" around it, which I had heard about but never seen.
Also, the bushmaster flash suppressor actually works! We shot some after sundown and saw no "orange pumpkin" at the muzzle, even with the 16" barrel.
The lack of a forward assist an dust cover was never an issue, but we were shooting under rather sterile conditions at a range.
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