This review concerns their 1:32 range, and I'll update it later with the 1:48 output, which I believe are on the way.

These barrels are really quite stunning, and have to be seen to be believed. The perforated cooling sleeves are all separate items, turned from brass and fully perforated for ultimate realism. The barrels within the sleeves are also realistically portrayed, with detailed muzzles and a healthy realisation of the barrel where all the dangerous stuff issues from. Those items without shrouds are again superdetailed and beautifully turned, even down to the tiny conical flash hiders on some of the Japanese items.

1) German MG 131 2) Japanese Type 97 3) A6M5 Zero (inc pitot tube and set 2) 4) P-47 Thunderbolt 5) Japanese Type 99 6) Browning M2 Aircraft 7) German MG17 8) Bf 109 E3-E9
Now here's where they really win out over other turned barrels. They come with detailed instructions, with caveats and useful tips pointed out. Typical of the level of detail is the Bf 109, which shows the offset of the two cowling mounted machine guns. Something not often seen with other manufacturers.
Conclusion
It's the small details that bring a model to life, and I think that these sets will raise that level nicely, with very little cutting and almost no effort from the modeller. I'm really looking forward to seeing the 1:48 parts.
Availability
In the UK Master Model barrels are available from White Ensign Models, where you should also find their range of barrels for your warship needs. In the US, Sprue Brothers carry their range, amongst others. Other distributors and retailers can be found here on their website.
Thanks to Master Models for the review samples, and James H for the introduction.
