| EKO Custom M4A1 RIS, 140m/s, AirsoftGuns, BY-051, BI-5181M | M4 CQB-R, ABS, D-Boys, LT-02B, BI-MX-12B | |
| Price excl. VAT | 265,12 € | 76,36 € | 
|---|---|---|
| Price incl. VAT | 320,80 € | 92,40 € | 
| Gun Length | 870/785 mm | 795/710 mm | 
| Gun Weight | 3,4 kg | 1,90 kg | 
| Inner Barrel Length | 364 mm 301 - 400 mm | 300 mm 201 - 300 mm | 
| Recommended Batteries | VB Li-Pol 11.1V, 1600mAh, 20C | Type CQB (9.6V, 1600mAh) | 
| Hop-Up Perform | adjustable hop-up | adjustable hop-up | 
| Magazine Capacity | 300 BB | 300 BB | 
| Gearbox Version | reinforced version 2 (7 mm) | reinforced version 2 (7 mm) | 
| Motor Type | Long torque | Long torque | 
| Fire Mode | safe/semi-auto/full-auto | safe/semi-auto/full-auto | 
| Muzzle velocity specified by manufacturer | - | 120 m/s [394 fps] | 
| Muzzle velocity the measured | 140 m/s [459 fps] | 120 m/s [394 fps] | 
| - notice - | Battery and charger are not included. | The package includes charger, but not battery. | 
| Muzzle Velocity | 121 - 140 m/s [395 - 460 fps] | 101 - 120 m/s [329 - 394 fps] | 
| Trigger switch | - | mechanical | 
| Recommended BBs | 0.25 - 0.28 g | 0.20 - 0.23 - 0.25 g | 
| Caliber | 6 mm | 6 mm | 
| Approximate Range | 70 m | 55 m | 
| Connector Type | T-Dean | Tamiya Mini | 
| Bearings | 7 mm, ball bearings, metal | 7 mm, ball bearings, metal | 
| Motor Variant | Long | Long | 
| Magazine (Lowcap/Midcap/Hicap/Xhicap) | hi-cap | hi-cap | 
| AEG Variant (EBB/NBB) | NBB | NBB | 
| BlowBack | No | No | 
| Detail | Detail | 
| EKO Custom M4A1 RIS, 140m/s, AirsoftGuns, BY-051, BI-5181M | Price excl. VAT: 265,12 € | Price incl. VAT: 320,80 € | 870/785 mm | 3,4 kg | 364 mm 301 - 400 mm | VB Li-Pol 11.1V, 1600mAh, 20C | adjustable hop-up | 300 BB | reinforced version 2 (7 mm) | Long torque | safe/semi-auto/full-auto | - | 140 m/s [459 fps] | Battery and charger are not included. | 121 - 140 m/s [395 - 460 fps] | - | 0.25 - 0.28 g | 6 mm | 70 m | T-Dean | 7 mm, ball bearings, metal | Long | hi-cap | NBB | No | |
| M4 CQB-R, ABS, D-Boys, LT-02B, BI-MX-12B | Price excl. VAT: 76,36 € | Price incl. VAT: 92,40 € | 795/710 mm | 1,90 kg | 300 mm 201 - 300 mm | Type CQB (9.6V, 1600mAh) | adjustable hop-up | 300 BB | reinforced version 2 (7 mm) | Long torque | safe/semi-auto/full-auto | 120 m/s [394 fps] | 120 m/s [394 fps] | The package includes charger, but not battery. | 101 - 120 m/s [329 - 394 fps] | mechanical | 0.20 - 0.23 - 0.25 g | 6 mm | 55 m | Tamiya Mini | 7 mm, ball bearings, metal | Long | hi-cap | NBB | No |