Our take: What sets the Bolt line of AEGs from other EBB airsoft rifles is the mechanics behind its blowback system. The Bolt M4 SOPMOD AEG features an innovative Bolt Recoil Shock System (B.R.S.S.) located inside the buffer tube. The weighted recoil system combined with the blowback action of reciprocating bolt in the receiver, however, delivers responsive recoil highly comparable to other electric recoil electric guns on the market. If that isn’t enough to pique your interest, the B4 SOPMOD AEG sports Bolt’s upgraded internal components already installed.
A 6.00mm (+/- 0.01) tightbore inner barrel provides improved air seal, yielding increased range, accuracy and muzzle velocity. The lightweight Bolt piston, made out of rugged aluminum, comes with a full steel tooth set that puts up with the abuse of this high performing rifle. And a stainless steel gear set significantly improves the durability of the gearbox, including the CNC-machined Bolt spur gear that reacts and functions optimally under high stress.
Also included in this electric recoil AEG is a rubber spring buffer inside the piston that reduces the overall wear of the metal gearbox. Unlike other electric recoil rifles, the Bolt M4 SOPMOD Airsoft AEG is wired to the rear and is equipped a six-position crane stock. This makes it easy to house the recommended 11.1V LiPo nunchuck battery (with 20/25C discharge rate). The Bolt B4 SOPMOD is an upgraded AEG that features responsive recoil, pre-upgraded furniture and well-made internal parts in a single package.
- Built-in Bolt Recoil Shock System (BRSS)
- Full metal receiver, outer barrel, rail system
- Full steel teeth aluminum piston w/ rubber spring buffer
- Stainless steel CNC-machined spur gear
- 6.00/6.01mm tightbore inner barrel
- 7-inch full metal drop-in quad rail
- More than 25 inches of combined rails
- Rotary wheel one-piece hop-up unit
- Crane stock w/ rubberized buttpad
- Rear adapter QD sling mount
- Adjustable front and rear iron sights
- Steel birdcage flash hider included
Operation: Electric Automatic (Blowback)
Build: Metal Upper/Lower Receiver, Outer Barrel, Rail System, Buffer Tube / Polymer Crane Stock, Motor Grip
Firing Modes: Semi-automatic, Full-automatic, w/ Functional Safety
Muzzle Velocity: 410 – 430 FPS (w/ 0.20g BBs)
Gearbox: Full Metal Version 2 (w/ Bolt recoil system)
Magazine: 300rd High Capacity (gear wind-up)
Battery: 7.4V / 11.1V LiPo Nunchuck Battery (not included)
Inner Barrel Length: 363 mm
Inner Barrel Diameter: 6.00 mm (+/- 0.01mm)
Weight: 7 pounds
Overall Length: 31.75" in. / 35.25" in. (Retracted / Extended)
Package includes: EBB rifle, hicap magazine, steel flash hider, replacement mini Tamiya connector, instruction manual
Ammo type: Seamless 0.20g or heavier (0.23g, 0.25g, 0.26g, 0.28g, etc) BBs. For maximum performance and accuracy, Airsoft Megastore recommends GoldenBall ProSlick BBs that carry perfect spherical consistency and density, available at Airsoft Megastore for the lowest price on the market, guaranteed.
Battery Charger Recommendation: Airsoft Megastore recommends the use of a universal smart charger to avoid overcharging the battery(overcharged batteries may cause decreased airsoft gun performance and may shorten battery life significantly). Smart chargers not only shorten charge time significantly (up to 800% faster charging), but more importantly, also automatically shut off once the battery is fully charged to avoid overcharged batteries.