| Full upgrade kit, PSG1, Systema | B&T MP5A4, without lights, Classic Army | Classic Custom M4 CQB-R, 150m/s, AirsoftGuns, BY-039, BI-3981M | |
| Price excl. VAT | 198,02 € | 178,18 € | 341,16 € | 
|---|---|---|---|
| Price incl. VAT | 239,60 € | 215,60 € | 412,80 € | 
| Gun Length | - | 680 mm | 795/710 mm | 
| Gun Weight | - | 2,516 kg | 2,8 kg | 
| Inner Barrel Length | - - | 229 mm 201 - 300 mm | 300 mm 201 - 300 mm | 
| Recommended Batteries | - | Type Large (8.4V) | VB Li-Pol 7.4V, 2000mAh, 15C, CQB | 
| Hop-Up Perform | - | adjustable hop-up | adjustable hop-up | 
| Magazine Capacity | - | 200 BB | 300 BB | 
| Gearbox Version | - | reinforced version 2 (7 mm) | reinforced version 2 (7 mm) | 
| Motor Type | - | High Speed & High Torque | Long SHS - hi-torque | 
| Fire Mode | - | safe/semi-auto/full-auto | safe/semi-auto/full-auto | 
| Muzzle velocity specified by manufacturer | - | 95 m/s [312 fps] | - | 
| Muzzle velocity the measured | - | - | 150 m/s [492 fps] | 
| - notice - | - | Battery and charger are not included. | Battery and charger are not included. | 
| Muzzle Velocity | - | 81 - 100 m/s [263 - 328 fps] | 141 - 160 m/s [461 - 524 fps] | 
| Trigger switch | - | mechanical | - | 
| Recommended BBs | - | 0.20 - 0.23 - 0.25 g | 0.28 - 0.30 g | 
| Caliber | - | 6 mm | 6 mm | 
| Approximate Range | - | 48 m | 75 m | 
| Connector Type | - | Tamiya Large | T-Dean | 
| 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 | Detail | 
| Full upgrade kit, PSG1, Systema | Price excl. VAT: 198,02 € | Price incl. VAT: 239,60 € | - | - | - - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
| B&T MP5A4, without lights, Classic Army | Price excl. VAT: 178,18 € | Price incl. VAT: 215,60 € | 680 mm | 2,516 kg | 229 mm 201 - 300 mm | Type Large (8.4V) | adjustable hop-up | 200 BB | reinforced version 2 (7 mm) | High Speed & High Torque | safe/semi-auto/full-auto | 95 m/s [312 fps] | - | Battery and charger are not included. | 81 - 100 m/s [263 - 328 fps] | mechanical | 0.20 - 0.23 - 0.25 g | 6 mm | 48 m | Tamiya Large | 7 mm, ball bearings, metal | Long | hi-cap | NBB | No | |
| Classic Custom M4 CQB-R, 150m/s, AirsoftGuns, BY-039, BI-3981M | Price excl. VAT: 341,16 € | Price incl. VAT: 412,80 € | 795/710 mm | 2,8 kg | 300 mm 201 - 300 mm | VB Li-Pol 7.4V, 2000mAh, 15C, CQB | adjustable hop-up | 300 BB | reinforced version 2 (7 mm) | Long SHS - hi-torque | safe/semi-auto/full-auto | - | 150 m/s [492 fps] | Battery and charger are not included. | 141 - 160 m/s [461 - 524 fps] | - | 0.28 - 0.30 g | 6 mm | 75 m | T-Dean | 7 mm, ball bearings, metal | Long | hi-cap | NBB | No |