diff --git a/packages/blueprints-integration/src/ingest.ts b/packages/blueprints-integration/src/ingest.ts
index 7ca21420af..6051082eb4 100644
--- a/packages/blueprints-integration/src/ingest.ts
+++ b/packages/blueprints-integration/src/ingest.ts
@@ -129,6 +129,7 @@ export enum DefaultUserOperationsTypes {
 	REVERT_PART = '__sofie-revert-part',
 	REVERT_RUNDOWN = '__sofie-revert-rundown',
 	UPDATE_PROPS = '__sofie-update-props',
+	IMPORT_MOS_ITEM = '__sofie-import-mos',
 }
 
 export interface DefaultUserOperationRevertRundown {
@@ -153,11 +154,19 @@ export interface DefaultUserOperationEditProperties {
 	}
 }
 
+export type DefaultUserOperationImportMOSItem = {
+	id: DefaultUserOperationsTypes.IMPORT_MOS_ITEM
+
+	payloadType: string
+	payload: any
+}
+
 export type DefaultUserOperations =
 	| DefaultUserOperationRevertRundown
 	| DefaultUserOperationRevertSegment
 	| DefaultUserOperationRevertPart
 	| DefaultUserOperationEditProperties
+	| DefaultUserOperationImportMOSItem
 
 export interface UserOperationChange<TCustomBlueprintOperations extends { id: string } = never> {
 	/** Indicate that this change is from user operations */
diff --git a/packages/blueprints-integration/src/userEditing.ts b/packages/blueprints-integration/src/userEditing.ts
index 607998cef7..e8799d0c97 100644
--- a/packages/blueprints-integration/src/userEditing.ts
+++ b/packages/blueprints-integration/src/userEditing.ts
@@ -2,11 +2,15 @@ import type { JSONBlob } from '@sofie-automation/shared-lib/dist/lib/JSONBlob'
 import type { ITranslatableMessage } from './translations'
 import { JSONSchema } from '@sofie-automation/shared-lib/dist/lib/JSONSchemaTypes'
 import { SourceLayerType } from './content'
+import { DefaultUserOperationsTypes } from './ingest'
 
 /**
  * Description of a user performed editing operation allowed on an document
  */
-export type UserEditingDefinition = UserEditingDefinitionAction | UserEditingDefinitionForm
+export type UserEditingDefinition =
+	| UserEditingDefinitionAction
+	| UserEditingDefinitionForm
+	| UserEditingDefinitionSofieDefault
 
 /**
  * A simple 'action' that can be performed
@@ -40,11 +44,22 @@ export interface UserEditingDefinitionForm {
 	currentValues: Record<string, any>
 }
 
+/**
+ * A built in Sofie User operation
+ */
+export interface UserEditingDefinitionSofieDefault {
+	type: UserEditingType.SOFIE
+	/** Id of this operation */
+	id: DefaultUserOperationsTypes
+}
+
 export enum UserEditingType {
 	/** Action */
 	ACTION = 'action',
 	/** Form */
 	FORM = 'form',
+	/** Operation for the Built-in Sofie Rich Editing UI */
+	SOFIE = 'sofie',
 }
 
 export interface UserEditingSourceLayer {
diff --git a/packages/corelib/src/dataModel/UserEditingDefinitions.ts b/packages/corelib/src/dataModel/UserEditingDefinitions.ts
index 194b604054..b54b4f7ed8 100644
--- a/packages/corelib/src/dataModel/UserEditingDefinitions.ts
+++ b/packages/corelib/src/dataModel/UserEditingDefinitions.ts
@@ -3,10 +3,14 @@ import type {
 	JSONBlob,
 	JSONSchema,
 	UserEditingSourceLayer,
+	DefaultUserOperationsTypes,
 } from '@sofie-automation/blueprints-integration'
 import type { ITranslatableMessage } from '../TranslatableMessage'
 
-export type CoreUserEditingDefinition = CoreUserEditingDefinitionAction | CoreUserEditingDefinitionForm
+export type CoreUserEditingDefinition =
+	| CoreUserEditingDefinitionAction
+	| CoreUserEditingDefinitionForm
+	| CoreUserEditingDefinitionSofie
 
 export interface CoreUserEditingDefinitionAction {
 	type: UserEditingType.ACTION
@@ -83,3 +87,9 @@ export interface CoreUserEditingProperties {
 	/** Translation namespaces to use when rendering this form */
 	translationNamespaces: string[]
 }
+
+export interface CoreUserEditingDefinitionSofie {
+	type: UserEditingType.SOFIE
+	/** Id of this operation */
+	id: DefaultUserOperationsTypes
+}
diff --git a/packages/job-worker/src/blueprints/context/lib.ts b/packages/job-worker/src/blueprints/context/lib.ts
index 60539616ec..62214063c7 100644
--- a/packages/job-worker/src/blueprints/context/lib.ts
+++ b/packages/job-worker/src/blueprints/context/lib.ts
@@ -14,6 +14,7 @@ import {
 	CoreUserEditingDefinitionAction,
 	CoreUserEditingDefinitionForm,
 	CoreUserEditingProperties,
+	CoreUserEditingDefinitionSofie,
 } from '@sofie-automation/corelib/dist/dataModel/UserEditingDefinitions'
 import { DBSegment } from '@sofie-automation/corelib/dist/dataModel/Segment'
 import { assertNever, clone, Complete, literal, omit } from '@sofie-automation/corelib/dist/lib'
@@ -58,6 +59,7 @@ import {
 	UserEditingDefinitionAction,
 	UserEditingDefinitionForm,
 	UserEditingProperties,
+	UserEditingDefinitionSofieDefault,
 	UserEditingType,
 } from '@sofie-automation/blueprints-integration/dist/userEditing'
 import type { PlayoutMutatablePart } from '../../playout/model/PlayoutPartInstanceModel'
@@ -532,6 +534,11 @@ function translateUserEditsToBlueprint(
 						schema: clone(userEdit.schema),
 						currentValues: clone(userEdit.currentValues),
 					} satisfies Complete<UserEditingDefinitionForm>
+				case UserEditingType.SOFIE:
+					return {
+						type: UserEditingType.SOFIE,
+						id: userEdit.id,
+					} satisfies Complete<UserEditingDefinitionSofieDefault>
 				default:
 					assertNever(userEdit)
 					return undefined
@@ -590,6 +597,11 @@ export function translateUserEditsFromBlueprint(
 						currentValues: clone(userEdit.currentValues),
 						translationNamespaces: unprotectStringArray(blueprintIds),
 					} satisfies Complete<CoreUserEditingDefinitionForm>
+				case UserEditingType.SOFIE:
+					return {
+						type: UserEditingType.SOFIE,
+						id: userEdit.id,
+					} satisfies Complete<CoreUserEditingDefinitionSofie>
 				default:
 					assertNever(userEdit)
 					return undefined
diff --git a/packages/webui/src/client/styles/rundownView.scss b/packages/webui/src/client/styles/rundownView.scss
index d73a06c36f..78d574d9c2 100644
--- a/packages/webui/src/client/styles/rundownView.scss
+++ b/packages/webui/src/client/styles/rundownView.scss
@@ -1580,6 +1580,19 @@ svg.icon {
 				z-index: 1;
 			}
 
+			&.drop-active {
+				&::after {
+					content: ' ';
+					display: block;
+					background-color: rgba(0, 183, 255, 0.5);
+					position: absolute;
+					top: 0;
+					left: 0;
+					bottom: 0;
+					right: 0;
+				}
+			}
+
 			&.outside-quickloop {
 				&::before {
 					content: ' ';
diff --git a/packages/webui/src/client/ui/SegmentTimeline/Parts/SegmentTimelinePart.tsx b/packages/webui/src/client/ui/SegmentTimeline/Parts/SegmentTimelinePart.tsx
index a34cffc5a0..70af5491e0 100644
--- a/packages/webui/src/client/ui/SegmentTimeline/Parts/SegmentTimelinePart.tsx
+++ b/packages/webui/src/client/ui/SegmentTimeline/Parts/SegmentTimelinePart.tsx
@@ -32,10 +32,11 @@ import { DBPart } from '@sofie-automation/corelib/dist/dataModel/Part'
 import { getPartInstanceTimingId, getPartInstanceTimingValue, RundownTimingContext } from '../../../lib/rundownTiming'
 import { OutputGroup } from './OutputGroup'
 import { InvalidPartCover } from './InvalidPartCover'
-import { ISourceLayer } from '@sofie-automation/blueprints-integration'
+import { DefaultUserOperationsTypes, ISourceLayer, UserEditingType } from '@sofie-automation/blueprints-integration'
 import { UIStudio } from '@sofie-automation/meteor-lib/dist/api/studios'
 import { LIVE_LINE_TIME_PADDING } from '../Constants'
 import * as RundownResolver from '../../../lib/RundownResolver'
+import { Events as MOSEvents } from '../../../lib/data/mos/plugin-support'
 
 export const SegmentTimelineLineElementId = 'rundown__segment__line__'
 export const SegmentTimelinePartElementId = 'rundown__segment__part__'
@@ -99,6 +100,8 @@ interface IState {
 	isTooSmallForText: boolean
 	isTooSmallForDisplay: boolean
 	highlight: boolean
+
+	dropActive: boolean
 }
 export class SegmentTimelinePartClass extends React.Component<Translated<WithTiming<IProps>>, IState> {
 	constructor(props: Readonly<Translated<WithTiming<IProps>>>) {
@@ -137,6 +140,7 @@ export class SegmentTimelinePartClass extends React.Component<Translated<WithTim
 							: 0
 				  )
 				: 0,
+			dropActive: false,
 		}
 	}
 
@@ -263,6 +267,10 @@ export class SegmentTimelinePartClass extends React.Component<Translated<WithTim
 
 	componentDidMount(): void {
 		super.componentDidMount && super.componentDidMount()
+
+		window.addEventListener(MOSEvents.dragenter, this.onDragEnter)
+		window.addEventListener(MOSEvents.dragleave, this.onDragLeave)
+
 		RundownViewEventBus.on(RundownViewEvents.HIGHLIGHT, this.onHighlight)
 		const tooSmallState = this.state.isTooSmallForDisplay || this.state.isTooSmallForText
 		if (tooSmallState) {
@@ -282,6 +290,10 @@ export class SegmentTimelinePartClass extends React.Component<Translated<WithTim
 
 	componentWillUnmount(): void {
 		super.componentWillUnmount && super.componentWillUnmount()
+
+		window.removeEventListener(MOSEvents.dragenter, this.onDragEnter)
+		window.removeEventListener(MOSEvents.dragleave, this.onDragLeave)
+
 		RundownViewEventBus.off(RundownViewEvents.HIGHLIGHT, this.onHighlight)
 		this.highlightTimeout && clearTimeout(this.highlightTimeout)
 	}
@@ -622,6 +634,23 @@ export class SegmentTimelinePartClass extends React.Component<Translated<WithTim
 		return { red, green, blue }
 	}
 
+	onDragEnter = (): void => {
+		const supportsDrop = this.props.part.instance.part.userEditOperations?.find(
+			(op) => op.type === UserEditingType.SOFIE && op.id === DefaultUserOperationsTypes.IMPORT_MOS_ITEM
+		)
+		if (!supportsDrop) return
+
+		this.setState({
+			dropActive: true,
+		})
+	}
+
+	onDragLeave = (): void => {
+		this.setState({
+			dropActive: false,
+		})
+	}
+
 	render(): JSX.Element | null {
 		// optimize early, if not inside viewport
 		if (!this.state.isInsideViewport) {
@@ -681,6 +710,8 @@ export class SegmentTimelinePartClass extends React.Component<Translated<WithTim
 							'outside-quickloop': isOutsideActiveQuickLoop,
 							'quickloop-start': isQuickLoopStart,
 							'quickloop-end': isQuickLoopEnd,
+
+							'drop-active': this.state.dropActive,
 						},
 						this.props.className
 					)}
@@ -690,6 +721,7 @@ export class SegmentTimelinePartClass extends React.Component<Translated<WithTim
 					role="region"
 					aria-roledescription={t('part')}
 					aria-label={this.props.part.instance.part.title}
+					data-part-id={this.props.part.partId}
 				>
 					{DEBUG_MODE && (
 						<div className="segment-timeline__debug-info">
diff --git a/packages/webui/src/client/ui/Shelf/ExternalFramePanel.tsx b/packages/webui/src/client/ui/Shelf/ExternalFramePanel.tsx
index ad488d0d13..fb3bce85d1 100644
--- a/packages/webui/src/client/ui/Shelf/ExternalFramePanel.tsx
+++ b/packages/webui/src/client/ui/Shelf/ExternalFramePanel.tsx
@@ -22,11 +22,16 @@ import {
 import { doUserAction, UserAction } from '../../lib/clientUserAction'
 import { withTranslation } from 'react-i18next'
 import { Translated } from '../../lib/ReactMeteorData/ReactMeteorData'
-import { IngestAdlib } from '@sofie-automation/blueprints-integration'
+import {
+	DefaultUserOperationImportMOSItem,
+	DefaultUserOperationsTypes,
+	IngestAdlib,
+	UserEditingType,
+} from '@sofie-automation/blueprints-integration'
 import { MeteorCall } from '../../lib/meteorApi'
 import { Rundown } from '@sofie-automation/corelib/dist/dataModel/Rundown'
-import { Buckets, Rundowns } from '../../collections'
-import { BucketId, PartInstanceId, RundownPlaylistId } from '@sofie-automation/corelib/dist/dataModel/Ids'
+import { Buckets, Rundowns, Segments } from '../../collections'
+import { BucketId, PartInstanceId, RundownId, RundownPlaylistId } from '@sofie-automation/corelib/dist/dataModel/Ids'
 import { MOS_DATA_IS_STRICT } from '@sofie-automation/meteor-lib/dist/mos'
 import { mosTypes, MOS } from '@sofie-automation/meteor-lib/dist/mos'
 import { RundownPlaylistCollectionUtil } from '../../collections/rundownPlaylistUtil'
@@ -35,7 +40,7 @@ import RundownViewEventBus, {
 	ItemDroppedEvent,
 	RundownViewEvents,
 } from '@sofie-automation/meteor-lib/dist/triggers/RundownViewEventBus'
-import { UIPartInstances } from '../Collections'
+import { UIPartInstances, UIParts } from '../Collections'
 
 interface IProps {
 	layout: RundownLayoutBase
@@ -210,6 +215,36 @@ export const ExternalFramePanel = withTranslation()(
 			return undefined
 		}
 
+		private findPartId(el: HTMLElement): {
+			rundownId: RundownId | undefined
+			segmentId: string | undefined
+			partId: string | undefined
+		} {
+			while (el.dataset.partId === undefined && el.parentElement) {
+				el = el.parentElement
+			}
+			const partId = el?.dataset.partId
+
+			if (partId) {
+				const part = UIParts.findOne(protectString(partId))
+				const supportsOp = part?.userEditOperations?.find(
+					(op) => op.type === UserEditingType.SOFIE && op.id === DefaultUserOperationsTypes.IMPORT_MOS_ITEM
+				)
+
+				if (supportsOp) {
+					const segment = Segments.findOne(part?.segmentId)
+
+					return {
+						rundownId: part?.rundownId,
+						segmentId: segment?.externalId,
+						partId: part?.externalId,
+					}
+				}
+			}
+
+			return { rundownId: undefined, partId: undefined, segmentId: undefined }
+		}
+
 		private getShowStyleBaseId() {
 			const { playlist } = this.props
 
@@ -243,11 +278,52 @@ export const ExternalFramePanel = withTranslation()(
 		}
 
 		receiveMOSItem(e: any, mosItem: MOS.IMOSItem) {
-			const { t } = this.props
-
 			console.log('Object received, passing onto blueprints', mosItem)
 
 			const bucketId = this.findBucketId(e.target)
+			if (bucketId) {
+				this.receiveMOSItemBucket(e, bucketId, mosItem)
+				return
+			}
+
+			const { rundownId, segmentId, partId } = this.findPartId(e.target)
+			if (rundownId && partId) {
+				console.log('pass to part', partId)
+				this.receiveMOSItemUserOp(e, rundownId, partId, segmentId, mosItem)
+				return
+			}
+		}
+
+		receiveMOSItemUserOp(
+			e: any,
+			rundownId: RundownId,
+			partId: string,
+			segmentId: string | undefined,
+			mosItem: MOS.IMOSItem
+		) {
+			const { t } = this.props
+
+			const operationTarget = { segmentExternalId: segmentId, partExternalId: partId, pieceExternalId: undefined }
+
+			doUserAction(t, e, UserAction.EXECUTE_USER_OPERATION, (e, ts) =>
+				MeteorCall.userAction.executeUserChangeOperation(
+					e,
+					ts,
+					rundownId,
+					operationTarget,
+					literal<DefaultUserOperationImportMOSItem>({
+						id: DefaultUserOperationsTypes.IMPORT_MOS_ITEM,
+
+						payloadType: 'MOS',
+						payload: MOS.stringifyMosObject(mosItem, MOS_DATA_IS_STRICT),
+					})
+				)
+			)
+		}
+
+		receiveMOSItemBucket(e: any, bucketId: BucketId, mosItem: MOS.IMOSItem) {
+			const { t } = this.props
+
 			const targetBucket = bucketId ? Buckets.findOne(bucketId) : Buckets.findOne()
 
 			const showStyleBaseId = this.getShowStyleBaseId()
diff --git a/packages/webui/src/client/ui/UserEditOperations/RenderUserEditOperations.tsx b/packages/webui/src/client/ui/UserEditOperations/RenderUserEditOperations.tsx
index f33ab76b4e..57dcbe8aab 100644
--- a/packages/webui/src/client/ui/UserEditOperations/RenderUserEditOperations.tsx
+++ b/packages/webui/src/client/ui/UserEditOperations/RenderUserEditOperations.tsx
@@ -86,6 +86,8 @@ export function UserEditOperationMenuItems({
 								<span>{translateMessage(userEditOperation.label, t)}</span>
 							</MenuItem>
 						)
+					case UserEditingType.SOFIE:
+						return null
 					default:
 						assertNever(userEditOperation)
 						return null