B4 URG-U Rifle Replica (B.R.S.S.) - Black/Gray
- Made of: aluminum + plastic + steel
- Weight: 2985g
- Length: 840-925mm
- Colour: black / grey
- Muzzle Velocity: ~430 FPS
- Engine: electric
- Manufacturer: BOLT Airsoft
B4 URG-U Rifle Replica (B.R.S.S.) - Black/Gray
The B4 URG-U (B.R.S.S.) assault rifle replica, produced by the Taiwanese company BOLT Airsoft, is undoubtedly a huge step forward in the evolution of AEG replicas. Thanks to the innovative solutions used, it was finally possible to bring the user experience of AEG replicas closer to those offered by GBBR replicas - so, in short, the BOLT Airsoft company created a rifle replica that really "kicks" like a real firearm.
The replica was made using high-class materials, with the utmost attention to detail. All metal parts are made of aluminum. All of the small elements are made out of steel. The replica is well made, and it doest not rattle. We will not experience any loose elements here, especially between the upper and lower receiver halves, which is characteristic for replicas from the so-called "top shelf".
The replica is equipped with a multi-position, telescopic BOM Stock - with a thick plastic butt plate and swing swivels for the QD tactical sling. There is a 22mm RIS rail with metal mechanical sights mounted on the top of the receiver. The front grip of the replica features an M-lok mounting system that allows for personalizing the replica to your own requirements and installing additional accessories such as grips or tactical flashlights. The replica is equipped with a Firehog type flash hider. The set also includes a polymer mid-cap magazine with a capacity of approx. 140 BBs.
The biggest draw of this replica is undoubtedly the recoil simulation system and the bolt operation. It consists of two independent elements: a standard imitation of the bolt operation known from most EBB replicas and a separate system mounted inside the stock guide. This system consists of a spring, an inertia and a system that transfers energy from the piston to the inertia. The impressions offered by the use of this solution are incomparable to anything previously offered by producers of AEG replicas. Despite some design differences caused by the use of the Blow Back system, the replica is largely compliant with the V.2 standard established by TM. The only significant difference is the piston with a characteristic cutout. However, it is equipped with a number of metal teeth, which guarantees its considerable durability. Compatibility of other parts of the gearbox guarantees easy tuning of the replica, as well as easy access to spare and service parts if necessary. A high-quality Hop-Up chamber in combination with a 6.02mm precision barrel guarantees excellent performance.
NOTE: The set does not include a battery or a charger.
The set includes:
- replica
- magazine
- user manual
NiCd
rechargeable battery is characterized by high efficiency
current-carrying capacity, but there are disruptive effect on memory.
Should be unloaded and loaded in the full cycle, ie, it is recommended
to fully discharge, and after unloading must charge the battery
immediately without leaving it for a long time in a discharged state.
NiMH batteries have a higher self-discharge over time and shorten the
life - on the other hand, they earn about 30% more capacity.
Blow back is a simulation system of the cocking lever - it imitates the work of it as the equivalent sharp. This system raises the realism and adds a lot more experience during shooting.
It is the spped of bb, while its leaving the innerbarrel of replica. This speed is measured in FPS (Feet Per Second).
1 FPS = 0,3 m/s
1 J = 99 m/s
1 J = 326,7 FPS
Indications v2, v3, v6 does not mean the level of advance, but only shape of gearbox skeleton which was used and selected by the manufacturer depending on the capabilities of the body of the replica. For example, a models of the M4/M16 family, MP5, have a v2 gearbox, while the AK family have gearbox v3.
Hop-Up system is used for overclocking bb during the shot (putting it in rotation), through which, it extends its flight path. Acting laws of physics make that bb lift up, while the gravitational force take it down. Appropriate adjustment of Hop-Up, will compensate for these two factors, which result in long and straight flight for longer distance and be greater focus shot (to improve accuracy).