Official Silverback video workshop

Silverback TAC-41 Long Front Rail Installation Guide

This official Silverback video demonstrates how the long front rail is fitted to the TAC-41 polymer stock, from preparing its nylon-lug hardware through checking the rail against the receiver rail. Use this guide when following the installation sequence or confirming the rail’s alignment, M-LOK layout, stock compatibility and removal requirement before an outer-barrel swap.

Primary source
TAC-41
Official Silverback video workshop
Source-based overview
3:45
Evidence standard
Silverback TAC-41 Long Front Rail Installation Guide
5step by step
3:45Video
8Tools and parts explicitly identified
TAC-41platform hub

01Source-based overview

What this procedure does

The video begins with the rail hardware prepared around four nylon lugs: screws and M-LOK T-nuts are fitted, while the rubber alignment pads are inserted in the shown orientation. The long rail is then placed against the lateral M-LOK slots of the TAC-41 polymer stock. All four lugs engage the slots, and the fasteners are tightened evenly before the alignment is checked with a ruler against the receiver rail.

The official description defines the rail as CNC aviation grade aluminium, weighing 155 grams with hardware excluded. It provides 295 mm of Picatinny rail aligned with the receiver rail and eight 45-degree M-LOK slots, four on each side. The rubber pad, pushed by a grub screw, adjusts vertical alignment and cancels the free-float effect; Silverback suggests mounting a bipod on the tripod mount when using that accessory. The rail must be removed before an outer-barrel swap.

Tools and parts explicitly identified

  • ruler
  • long front rail
  • screws
  • M-LOK T-nuts
  • four nylon lugs
  • rubber alignment pads
  • grub screw
  • TAC-41 polymer stock

Evidence standard

Every technical statement below is restricted to the official Silverback description, subtitles, on-screen text or visible action. Unstated torque values and compatibility claims are intentionally omitted.

What the footage makes clear

This walkthrough stays close to the official Silverback source. The expanded notes explain what is visible at each checkpoint, while measurements, compatibility and cautions remain limited to what Silverback actually states.

  • Installation sequence and visible hardware details are attributed to the visual review observations from the official video.
  • Rail dimensions, construction, weight, stock compatibility, alignment function and barrel-swap requirement are attributed to the official video description.
  • No official or automatic English or French subtitle track was available.
Specification Source value
Construction CNC aviation grade aluminium
Weight 155 grams (hardware excluded)
Picatinny rail 295 mm aligned with the receiver rail
M-LOK slots 8 Mlok slots at 45° angle (4 on each side)
Compatible polymer stock colours SBA-STK-31BK, SBA-STK-31FDE, SBA-STK-31OD, SBA-STK-31WG
Product RAL-31
Which TAC-41 stocks does this rail section fit?Which tools or parts are identified for Silverback TAC-41 Long Front Rail Installation Guide?

02Primary source

Watch the official Silverback tutorial

Every technical statement below is restricted to the official Silverback description, subtitles, on-screen text or visible action. Unstated torque values and compatibility claims are intentionally omitted.

What should I watch for before Prepare the lug hardware?Where does the official video show Adjust vertical alignment?

03Procedure

Silverback TAC-41 Long Front Rail Installation Guide, step by step

TAC-41 Four nylon lug assemblies are prepared with their screws, M-LOK T-nuts and rubber alignment pads.
Four nylon lug assemblies are prepared with their screws, M-LOK T-nuts and rubber alignment pads.
TAC-41 The long rail is brought against the TAC-41 polymer stock and its four lugs meet the lateral M-LOK slots.
The long rail is brought against the TAC-41 polymer stock and its four lugs meet the lateral M-LOK slots.
TAC-41 All four nylon lugs are engaged, and the rail fasteners are tightened evenly along the stock.
All four nylon lugs are engaged, and the rail fasteners are tightened evenly along the stock.
TAC-41 A ruler is used to compare the long Picatinny rail with the receiver rail.
A ruler is used to compare the long Picatinny rail with the receiver rail.
01Prepare the lug hardwareThe opening view shows the screws and M-LOK T-nuts fitted to four nylon lugs, with the rubber alignment pads inserted in the orientation shown. Compare the hardware arrangement with the frame before moving to the stock, because these four lug assemblies are the parts that will engage the lateral slots. Once this preparation matches the view, the long rail is ready to be positioned. Video: 00:20 ↗
02Place the rail on the stockAt this checkpoint, the long rail is held against the TAC-41 polymer stock and brought to the lateral M-LOK slots. The frame shows the rail sitting along the stock while the lug assemblies meet the slots, so compare the contact and slot engagement before fastening. With the rail positioned against the stock, the sequence continues by securing all four lugs. Video: 01:09 ↗
03Secure all four lugsThe fasteners are tightened with all four nylon lugs engaged in the lateral slots. Watch the frame for the rail remaining against the TAC-41 polymer stock while the fasteners are tightened evenly, rather than treating one lug as the completed installation. Once the four lug connections are secured, the next checkpoint uses a ruler to examine the rail’s relationship with the receiver rail. Video: 02:08 ↗
04Check receiver-rail alignmentA ruler is placed to check the long rail against the receiver rail. Compare the two rail lines in the frame, since the official description specifies that the 295 mm Picatinny rail is aligned with the receiver rail. This visual check leads directly to the vertical-alignment adjustment, where the grub screw works against the rubber pad. Video: 02:47 ↗
05Adjust vertical alignmentThe final view shows the grub screw being tightened against the rubber alignment pad to correct the rail’s vertical alignment. The pad is the adjustment point identified by Silverback, and using it cancels the free-float effect. Compare the rail position with the preceding ruler check; for a bipod in this configuration, the official description suggests using the tripod mount instead. Video: 03:25 ↗
Source-stated cautions
  • You must remove this rail before attempting a barrel swap.
  • Using the rubber alignment pad cancels the free-float effect; Silverback suggests mounting the bipod on the tripod mount if using this accessory.
Checks shown or stated
  • All four nylon lugs are engaged in the lateral slots.
  • The fasteners are tightened evenly.
  • A ruler is used to check alignment with the receiver rail.
  • The grub screw is tightened against the rubber pad to correct vertical alignment.
How do I complete Prepare the lug hardware safely?What must I check after Adjust vertical alignment?

04FAQ

TAC-41 tutorial questions

Which TAC-41 stocks does this rail section fit?

The official description lists the TAC-41 polymer-stock versions SBA-STK-31BK, SBA-STK-31FDE, SBA-STK-31OD and SBA-STK-31WG.

How much rail and how many M-LOK slots does it provide?

It provides 295 mm of Picatinny rail aligned with the receiver rail, plus eight 45-degree M-LOK slots, with four on each side.

What must happen before an outer-barrel swap?

The official description states that the rail must be removed before attempting a barrel swap.

Which TAC-41 stocks does this rail section fit?How much rail and how many M-LOK slots does it provide?

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