BOYI 3881 Special Operation Review

Unmodified BOYI BI-3881 SO

The name BOYI (Kalash or D'Boys) is recognised as one of the pioneers of airsoft gun makers in China. On par with Jing Gong (Golden Bow), they manufacture medium-hi quality airsoft guns and one of their successful product is BI-3881 SO. Released in 2007, it is a modified M4 rifle replica featuring metal RAS for mounting accessories, Knights Armaments styled adjustable butt stock, and a stylish silencer.

There are two versions of BI-3881 SO, the first one is full metal version, the second one is plastic. In this review, I used the plastic body one. However, altough it is named plastic, the only difference with the metal version is the receiver, one is made of metal and the other is plastic.

Inside the box, you will find the M4 rifle, vertical grip, one-point tactical sling, a metal magazine which can be filled with 300 BB bullets, a 1100mAh battery + charger, some low quality BB bullets, a decent manual, and a cleaning rod. Most parts are made of metal; I can say that they are good quality and have smooth finishing. The plastic parts are the butt stock, upper and lower receivers, hand grip, and vertical grip. Altough some parts are made of plastic, it is quite sturdy and should be able to endure some hard hit. The included sling is also quite useful and made of good quality material.

About accuracy, I can say that this gun performs pretty accurate. You can get around 2,5cm deviation when shooting in 10-15m range with single-shot mode. In 30-40m range, you can shoot a man sized target quite easily, even with full-auto mode. However, to achieve this accuracy, you must carefully adjust the Hop-Up gears as it is very sensitive.
In terms of muzzle velocity, although I don't have a chronograph, my best guess is around 270-300 FPS, which is standard for an airsoft rifle. With this speed, a Coke can is easy to be destroyed with several hits. I tested it using 0.2g BB bullets.

My only complaints are that the butt stock wobbles quite heavily, its default battery power is quite weak, and the magazine seems to be not precisely fit. And for some people, this airsoft gun may be too heavy as it weigh around 4kg with full magazine.

The street price for this rifle is around US$100. At this cheap price, it would be a very good deal considering it has good quality. I would recommend this rifle for a beginner or even a veteran who wants to save money. It is also good for collection or for display.

Below is the picture of my gun. Notice that the original iron sight has been replaced with my Walther red-dot sight, the lower receiver has also been modified (with Colt custom marking), and an additional laser pointer is attached.

My Modified BOYI BI-3881 SO

Small Arms by Chris Chant

This book is all about small arms from the World War I Era until Post-Modern Era. Written by Chris Chant, a famous guns and airplanes books writer. This gun encyclopedia-like book contains information about over 250 pistols, submachine guns, rifles, grenades and missile weaponry.
Although it has many photographs and factsheets. I felt that the factsheets is not so accurate and the some photos are not the real model of the gun itself. Also, it doesn't cover all of the gun models, just the famous models. In addition, there's something that irritate me the most is that when I saw this book depicts M4 and M16 as the same rifle type. Everyone know that these are two different type of rifles (although M4 is inherited from M16), but the writer decided to combine these assault rifles into the same category and put only one schematic photos of M16.
But overall, this book is quite detailed. Full of photographs. Also it is pretty simple for beginners who wants to know about famous guns in the world. And for the bonus, it contains some short history of the gun era and prototype guns in the future.