Mobile Strike - 4th Attachment Slot
All information about the special skill 4th Attachment Slot in Mobile Strike including how it can be unlocked.
| Name | 4th Attachment Slot |
| Description | Allows you to use add an Attachment to the 4th Attachment Slot when manufacturing Prototype Gear |
| Unlocked by | 4th Attachment Manufacturing Slot 1 |
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Requirements
An overview of all buildings and research necessary to unlock 4th Attachment Slot.
| Unit | Stone | Oil | Iron | Food | Coin | Special Items | Original Time |
|---|---|---|---|---|---|---|---|
| Armory 1-9 | 85K | 105K | 210K | 73K | 10:38:45 | ||
| Headquarters 1-14 | 3.62M | 3.60M | 1.50M | 1.79M | 15d 12:47:17 | ||
| Hospital 1-6 | 18K | 14K | 11K | 8.9K | 01:32:06 | ||
| Iron Mine 1-9 | 28K | 26K | 24K | 11:20:60 | |||
| Quarry 1-9 | 26K | 26K | 24K | 09:55:60 | |||
| Research Facility 1-14 | 1.81M | 1.80M | 753K | 1.08M | 4d 28:19:13 | ||
| Trading Post 1-8 | 59K | 80K | 36K | 40K | 05:04:58 | ||
| Training Grounds 1-9 | 141K | 105K | 79K | 61K | 12:46:30 | ||
| Wall 1-9 | 353K | 262K | 98K | 151K | 14:56:30 | ||
| Warehouse 1-5 | 7.5K | 7.5K | 5.7K | 3.8K | 00:31:00 | ||
| Core Mastery Level 1 1 | 374K | 326K | 326K | 336K | 294K | 00:24:00 | |
| Troop Load II 1-6 | 11.25M | 4.94M | 4.68M | 2.26M | 10.45M | 1d 15:34:30 | |
| Core Mastery Level 2 1 | 1.31M | 1.23M | 896K | 1.05M | 1.39M | 04:36:10 | |
| Gathering II 1-6 | 1.80M | 1.59M | 758K | 2.88M | 3.35M | 1d 16:07:20 | |
| Core Mastery Level 3 1 | 7.25M | 6.67M | 5.69M | 5.93M | 8.08M | 1d 22:49:20 | |
| Manufacturing Speed I 1-7 | 2.42M | 4.25M | 8.04M | 7.75M | 8.98M | 4d 13:59:20 | |
| Core Mastery Level 4 1 | 24.73M | 21.40M | 17.86M | 18.10M | 15.58M | 10 Research File | 11d 19:42:50 |
| 4th Attachment Manufacturing Slot 1 | 34.30M | 29.69M | 24.77M | 25.11M | 21.61M | 50 Research File | 31d 23:26:50 |
| Core Mastery Level 5 1 | 47.21M | 44.21M | 40.25M | 42.37M | 29.06M | 20 Research File | 36d 05:24:00 |
| Totals | 136.76M | 120.32M | 106.00M | 109.04M | 98.79M | 80 Research File | Building: 23d 11:53:19 Research: 90d 02:04:20 |