Model Train Guides
Atlas HO Code 100 Mark V #4 Left Turnout – 391: Scale, Layout & Compatibility Guide

This page is devoted to Atlas HO Code 100 Mark V #4 Left Turnout – 391, the exact model railroad track & electrical sold under the Atlas record. The goal is practical identification: what the listing confirms, what remains unverified, and what a buyer or builder should compare before using the item.
Matching the exact listing
- Exact product: Atlas HO Code 100 Mark V #4 Left Turnout – 391
- Brand or vendor: Atlas
- Product type: Model Railroad Track & Electrical
- SKU or catalog key: ATL391
- Road or release number: 4
- Variants reviewed: 1
- Product images indexed: 1
The recorded price at verification was $32.95 before shipping and tax. At least one variant was orderable when the record was checked.
The complete title is meaningful here, not decorative. The number 4 separates this release from visually similar versions. Keep ATL391 with the product record because abbreviated names often omit the detail that distinguishes one version from another.
Confirmed facts versus assumptions
Current catalog evidence can be summarized as follows: “Atlas HO Code 100 Customline Mark V #4 left-hand turnout with nickel-silver rail, black ties, DCC-friendly design and a powerable metal frog.” Every additional recommendation in this guide is framed as a check or planning step when the listing itself does not confirm the answer.
Practical use and compatibility
Place Atlas HO Code 100 Mark V #4 Left Turnout – 391 in the layout plan by answering four questions: what scale is stated, what railroad or equipment identity is shown, what physical or electrical interface is required, and what clearance or radius does the layout provide? The catalog key ATL391 keeps those answers attached to the correct release.
For rolling stock, inspect road number, body style, trucks, wheels and couplers. For electronics, identify connector, current capacity, speaker or lighting needs. For structures and scenery, verify footprint, power and clearance.
The details to verify next
For electronics, do not connect the item until the locomotive or accessory wiring is documented. For rolling stock, check free rolling, wheel gauge and coupler height. For structures, make a paper footprint before cutting scenery. Each approach tests the highest-risk compatibility point first.
The live page remains the source for current price and availability; the roster remains the source for what the layout already owns.
The photographed item is part of the specification
1 product image were available to the catalog at verification. Use them as item-level evidence: zoom in on the SKU, graphics, edges, connectors, part arrangement or package callouts relevant to this model railroad track & electrical. Do not substitute a generic manufacturer image when the exact listing supplies a more specific view.
Pre-purchase checklist for this exact record
- Identity: title, vendor and item number ATL391 agree.
- Contents: included pieces and quantity are explicit.
- Fit: scale, dimensions or interface match the intended use.
- Condition: the photographed state is acceptable for the project or collection.
- Transaction: current option, price and availability are confirmed.
Where it sits in the Muncle Mikes catalog
1:12 Scale Diecast Models & Kits · Atlas Model Trains & Railroad Products
Preserving the identity trail
The permanent record should answer three questions: what exact item was bought, what arrived, and how it was used or stored. The title and ATL391 answer the first; arrival photographs answer the second; project or collection notes answer the third.
Keeping those layers separate improves future comparisons and avoids unsupported grading.
Gift considerations
For gifting, the product image can verify the visual subject while the item number ATL391 verifies the release. Both checks matter when the recipient collects small variations.
Questions answered by the exact listing
Can a similar title be treated as the same release?
Not without matching ATL391 and the images. Similar subjects can differ by scale, finish, road number, quantity, interface or packaging.
Does the article guarantee every specification?
No. It distinguishes confirmed listing facts from checks that still need current source documentation.
What should be saved after purchase?
Keep the receipt, exact URL, SKU, selected option and at least one arrival photograph.
Decision summary: choose Atlas HO Code 100 Mark V #4 Left Turnout – 391 when the complete identity, photographed details and intended use all match. The live page should settle current price and availability; this guide preserves the evidence needed to recognize the exact item.
Review the live Atlas HO Code 100 Mark V #4 Left Turnout – 391 listing
Verified October 15, 2026 from the exact Shopify product record. Current price, options and availability remain controlled by the live listing.
Product-specific verification note
The evidence trail for Atlas HO Code 100 Mark V #4 Left Turnout – 391 should remain attached to item number ATL391. Compare the product received with the saved image before opening, modifying or installing it. Record any stated variation, missing measurement, accessory or condition qualifier, then add observed results only after direct inspection. This final step keeps the article factual while making the ownership or project record reproducible.
Verification worksheet for this listing
Use ATL391 as the checkpoint for Atlas HO Code 100 Mark V #4 Left Turnout – 391. Confirm the vendor name Atlas, the product type Model Railroad Track & Electrical, the selected variant and the photographed item before checkout. If a required size, scale, material, interface or included component is absent from the live record, write it down as unresolved and obtain the answer from the current instructions or manufacturer source.
After delivery, add a dated photograph and a brief result note. A builder can record fit, materials and finishing choices; a collector can record package and item condition; a user can record compatibility and care. Those details make the record genuinely product-specific while preventing a later observation from being confused with a factory specification.

