CustomItems and MER Spawn compatibility issues

[DinoNuggets2]

Describe the bug
When trying to spawn a gun with a limited amount of ammo (sniper rifle for example) in a MER Locker, it gives it the normal amount of ammo

To Reproduce
Steps to reproduce the behavior:

1. Spawn a GunLocker with MER
2. Make a Sniper Rifle spawn inside
3. Take the rifle out and check the ammo

Expected behavior
Expected to have limited ammo, instead of a full magazine

Server logs
Please include a pastebin of your localadmin log file (or both MA_log and SCP_log files if you use MultiAdmin) from the time in which the bug occurred
https://pastebin.com/Xm54HeKh

EXILED Version ("latest" is not a version):
5.2.2

Results of show plugins command in console:
Enabled plugins: 34
Disabled plugins: 4

                             Exiled.Events:
                                    - Author: Exiled Team
                                    - Version: 5.2.2.0
                                    - Required Exiled Version: 5.2.2.0
                                    - Prefix: exiled_events
                                    - Priority: Highest
                             CedMod:
                                    - Author: ced777ric#8321
                                    - Version: 3.1.3
                                    - Required Exiled Version: 5.0.0
                                    - Prefix: cm
                                    - Priority: Highest
                             AudioPlayer:
                                    - Author: Jesus-QC
                                    - Version: 1.1.0
                                    - Required Exiled Version: 5.2.2
                                    - Prefix: audio_player
                                    - Priority: High
                             AudioAnnouncements:
                                    - Author: Heisenberg3666
                                    - Version: 1.0.0.0
                                    - Required Exiled Version: 5.2.0
                                    - Prefix: audio_announcements
                                    - Priority: Medium
                             Spectator Shooting Range:
                                    - Author: rayzer
                                    - Version: 3.0.1
                                    - Required Exiled Version: 5.2.1
                                    - Prefix: spectator_shooting_range
                                    - Priority: Medium
                             CustomItems:
                                    - Author: Exiled Team
                                    - Version: 6.1.2.0
                                    - Required Exiled Version: 5.0.0
                                    - Prefix: custom_items
                                    - Priority: Medium
                             Exiled.CreditTags:
                                    - Author: Babyboucher20 & iRebbok & Exiled Team
                                    - Version: 5.2.2.0
                                    - Required Exiled Version: 5.2.2.0
                                    - Prefix: exiled_credits
                                    - Priority: Medium
                             MapEditorReborn:
                                    - Author: Michal78900 (original idea by Killers0992)
                                    - Version: 2.0.3
                                    - Required Exiled Version: 5.3.0
                                    - Prefix: map_editor_reborn
                                    - Priority: Medium
                             TeamGenocide:
                                    - Disabled
                                    - Author: Heisenberg3666
                                    - Version: 2.1.4.0
                                    - Required Exiled Version: 5.2.2
                                    - Prefix: team_genocide
                                    - Priority: Medium
                             hats:
                                    - Author: Rowpann SCP
                                    - Version: 1.0.0
                                    - Required Exiled Version: 5.2.0
                                    - Prefix: hats
                                    - Priority: Medium
                             UIURescueSquad:
                                    - Author: JesusQC, Michal78900, maintained by Marco15453
                                    - Version: 3.3.0
                                    - Required Exiled Version: 5.3.0
                                    - Prefix: UIURescueSquad
                                    - Priority: Medium
                             Push:
                                    - Author: Push
                                    - Version: 1.0.0.0
                                    - Required Exiled Version: 5.2.2.0
                                    - Prefix: push
                                    - Priority: Medium
                             VendingMachine:
                                    - Author: moddedmcplayer
                                    - Version: 1.0.0
                                    - Required Exiled Version: 5.2.1
                                    - Prefix: vending_machine
                                    - Priority: Medium
                             Scp035:
                                    - Author: Joker119
                                    - Version: 4.0.3
                                    - Required Exiled Version: 5.0.0
                                    - Prefix: Scp035
                                    - Priority: Medium
                             Walnut Fucking Explodes (PFE Remake):
                                    - Author: XoMiya-WPC
                                    - Version: 1.0.0
                                    - Required Exiled Version: 5.3.0
                                    - Prefix: WalnutFuckingExplodes
                                    - Priority: Medium
                             SCP1162:
                                    - Author: xRoier
                                    - Version: 5.0.0
                                    - Required Exiled Version: 5.0.0
                                    - Prefix: scp1162
                                    - Priority: Medium
                             Advanced Subclassing Redux:
                                    - Author: Steven4547466
                                    - Version: 1.0.0
                                    - Required Exiled Version: 5.0.0.0
                                    - Prefix: ASR
                                    - Priority: Medium
                             SupplyDrop:
                                    - Author: Wafel, KadeDev, JesusQC
                                    - Version: 3.3.0
                                    - Required Exiled Version: 5.0.0
                                    - Prefix: SD
                                    - Priority: Medium
                             Exiled.CustomRoles:
                                    - Author: Exiled Team
                                    - Version: 5.2.2.0
                                    - Required Exiled Version: 5.2.2.0
                                    - Prefix: exiled_custom_roles
                                    - Priority: Medium
                             MidnightDefense:
                                    - Author: KuebV
                                    - Version: 1.3.0
                                    - Required Exiled Version: 5.2.2.0
                                    - Prefix: midnight_defense
                                    - Priority: Medium
                             SCP-575:
                                    - Disabled
                                    - Author: Joker119
                                    - Version: 4.0.0
                                    - Required Exiled Version: 5.0.0
                                    - Prefix: 575
                                    - Priority: Medium
                             DiscordIntegration:
                                    - Disabled
                                    - Author: DiscordIntegration
                                    - Version: 6.0.4.0
                                    - Required Exiled Version: 5.2.0
                                    - Prefix: discord_integration
                                    - Priority: Medium
                             LightsRE:
                                    - Author: Beryl - (Contributors: BuildBoy12)
                                    - Version: 5.0.0
                                    - Required Exiled Version: 5.1.2
                                    - Prefix: lights
                                    - Priority: Medium
                             Exiled.Updater:
                                    - Disabled
                                    - Author: Exiled.Updater
                                    - Version: 3.1.1.0
                                    - Required Exiled Version: 5.2.2.0
                                    - Prefix: exiled_updater
                                    - Priority: Medium
                             OmegaWarhead:
                                    - Author: ClaudioPanConQueso
                                    - Version: 1.0.8
                                    - Required Exiled Version: 5.2.1
                                    - Prefix: OmegaWarhead
                                    - Priority: Medium
                             WaitAndChillReborn:
                                    - Author: Michal78900
                                    - Version: 5.0.1
                                    - Required Exiled Version: 5.2.1
                                    - Prefix: wait_and_chill_reborn
                                    - Priority: Medium
                             LeftHandedPlayers:
                                    - Author: TemmieGamerGuy
                                    - Version: 1.0.1
                                    - Required Exiled Version: 3.0.0
                                    - Prefix: left_handed_players
                                    - Priority: Medium
                             Admin Tools:
                                    - Author: Originally by Galaxy119. Modifications by KoukoCocoa & Thomasjosif
                                    - Version: 5.1.0.0
                                    - Required Exiled Version: 5.1.0
                                    - Prefix: AT
                                    - Priority: Medium
                             RespawnTimer:
                                    - Author: Michal78900
                                    - Version: 3.1.0
                                    - Required Exiled Version: 5.0.0
                                    - Prefix: respawn_timer
                                    - Priority: Medium
                             Common Utilities:
                                    - Author: Joker119
                                    - Version: 6.2.0.0
                                    - Required Exiled Version: 5.2.1
                                    - Prefix: CommonUtilities
                                    - Priority: Medium
                             KillMessage:
                                    - Author: GabiRP
                                    - Version: 1.0.7
                                    - Required Exiled Version: 5.0.0
                                    - Prefix: kill_message
                                    - Priority: Medium
                             Exiled.CustomItems:
                                    - Author: Exiled Team
                                    - Version: 5.2.2.0
                                    - Required Exiled Version: 5.2.2.0
                                    - Prefix: exiled_custom_items
                                    - Priority: Medium
                             Exiled.Permissions:
                                    - Author: Exiled Team
                                    - Version: 5.2.2.0
                                    - Required Exiled Version: 5.2.2.0
                                    - Prefix: exiled_permissions
                                    - Priority: Medium
                             LogArchiver:
                                    - Author: Galaxy119
                                    - Version: 1.0.0
                                    - Required Exiled Version: 2.1.18
                                    - Prefix: LogArchiver
                                    - Priority: Medium
                             AntiStalker:
                                    - Author: Heisenberg3666
                                    - Version: 1.0.0.0
                                    - Required Exiled Version: 5.1.3
                                    - Prefix: anti_stalker
                                    - Priority: Medium
                             SummonRespawnVehicles:
                                    - Author: 
                                    - Version: 1.0.0.0
                                    - Required Exiled Version: 5.2.2.0
                                    - Prefix: summon_respawn_vehicles
                                    - Priority: Medium
                             WarheadCustomColor:
                                    - Author: 
                                    - Version: 1.0.0.0
                                    - Required Exiled Version: 5.2.2.0
                                    - Prefix: warhead_custom_color
                                    - Priority: Lowest
                             Smelly096:
                                    - Author: x3rt
                                    - Version: 1.0.0
                                    - Required Exiled Version: 3.0.0
                                    - Prefix: smelly096
                                    - Priority: Lowest

Additional context