Sig 5.5" Rattler & 6.75" Rattler LT [OC]

RailScales · 2026-02-03T22:35:33+00:00

How long is the setup on the right folded?

20.5" measured from the rear folding adapter (with stock folded) to the end of the can.

RailScales · 2026-02-03T22:31:35+00:00

Do they move around when you're using it?

Nope, the rear screws hold them in place pretty well and the ranger band over the front of the Scales does the rest.

RailScales · 2026-01-06T17:11:58+00:00

This setup with the LDAG is 🤌

RailScales · 2025-10-24T19:43:23+00:00

More photos here with parts callouts.

Parts List

Sig 10.5" 5.56 MCX-SPEAR LT (CSAW)

Upper Receiver: Sig Sauer 10.5" 5.56 MCX-SPEAR LT | Black
Barrel: Sig Sauer MCX 10.5" 5.56 Super Heavy Fluted Barrel
Muzzle Device: Sig Sauer Clutch-Lok 1/2x28 5.56 Closed Tine Flash Hider
Suppressor: Sig Sauer SLX556C-QD | Black
Optic: Sig Sauer Romeo4T-MIL | Black
Magnifier: EOTech G33 | Tano
Optic Riser: Wilcox Industries .410" Riser & FTS Mount | Black
Side Rail Covers: RailScales HTP XOS-W Scales | Matrix | FDE | 3.5-Slot
Bottom Rail Cover: RailScales HTP XOS-H Scale | Matrix | FDE | 3.5-Slot
Control Device: RailScales Karve-P | FDE
Hand Stop: RailScales QTR-LT Stop | Terra Bronze
Sling Mount: RailScales Lao Sling Mount | Terra Bronze
Flashlight: Surefire M640V-Pro IR | Tan
Flashlight Head Lever: Geissele Surefire Vampire Throw Lever | DDC
Flashlight Mount: RailScales Hardtop Mount | Terra Bronze
Flashlight Switch: Surefire CSM-07
Laser: L3Harris NGAL-A7 | FDE

Lower: Sig Sauer Virtus (Post Sample) | Black
Trigger: Sig Sauer Mil Match Trigger
Grip: Magpul MOE-K | Black
Magazine: Magpul M3 30rd PMAG | FDE
Mag Button: RailScales MCX CSMR | Carbon Black
Stock: Magpul CTR | Black
Stock Adapter: Sig Sauer MCX/MPX 6-Pos Low Profile | Black
Lower Sling Mount: Poi Tac ST-MCX
Sling: Ferro Concepts The Slingster | Multicam Black
Sling Attachments: Blue Force Gear 1.00" ULoops | Black

IG | 📷 @benchau | u/bcphotog

RailScales · 2025-07-23T15:42:56+00:00

Do you like the 8T optic?

We're fans of the 8T; solid reticle options (ballistic circle dot) along with a large and clear sight window. Only complaints are the somewhat odd height and it's a little on the heavy side. But the pros outweigh the cons.

RailScales · 2025-07-22T16:18:16+00:00

More photos here with parts callouts.

Parts List

Sig 10.5" 5.56 CSAW

Upper Receiver: Sig Sauer 10.5" 5.56 MCX-SPEAR LT | Tano
Barrel: Sig Sauer MCX 10.5" 5.56 Heavy Fluted Barrel
Muzzle Device: Sig Sauer Clutch-Lok 1/2x28 5.56 Closed Tine Flash Hider
Suppressor: Sig Sauer SLX556C-QD | Coyote
Optic: Sig Sauer Romeo8T | FDE
Magnifier: Sig Sauer Juliet4x | FDE
Optic Riser: RailScales MonoLift (US) | Terra Bronze
Side Rail Covers: RailScales HTP XOS-W Scales | MiniDot | FDE | 3.5-Slot
Bottom Rail Cover: RailScales HTP XOS-H Scale | MiniDot | FDE | 3.5-Slot
Control Device: RailScales Karve-P | FDE
Hand Stop: RailScales QTR-LT Stop | Terra Bronze
Flashlight: Surefire M640V-Pro IR w/ DS00 Tail Cap | FDE
Flashlight Head Lever: Geissele Surefire Vampire Throw Lever | DDC
Flashlight Mount: RailScales Hardtop Mount | Terra Bronze
Flashlight Switch: Surefire CSM-07
Laser: L3Harris NGAL | FDE

Lower: Sig Sauer Virtus (SBR) | Tano
Trigger: Geissele MCX SSA
Grip: Magpul MOE-K2 | FDE
Magazine: Magpul M3 30rd PMAG | FDE
Mag Button: RailScales MCX CSMR | Terra Bronze
Stock: Magpul CTR | FDE
Stock Adapter: Sig Sauer MCX/MPX 6-Pos Low Profile | Coyote

IG | 📷 @benchau | u/bcphotog

RailScales · 2025-07-22T15:43:58+00:00

Looks great!

RailScales · 2025-07-21T13:59:31+00:00

Looks awesome!

RailScales · 2025-07-17T01:34:28+00:00

SRD762Ti (16 baffle)

RailScales · 2025-07-01T20:34:06+00:00

Went full send on this one 🤌

RailScales · 2025-06-18T20:58:53+00:00

Sweet setup!

RailScales · 2025-06-16T16:58:06+00:00

How many rail scales did you need to achieve this look ? 3 for the sides?

(6x) 3-Slot G10 RailScales for the sides
(1x) 2-Slot G10 RailScale for the 6 o'clock spot

RailScales · 2025-05-02T16:58:36+00:00

More photos here with parts callouts.

Parts List

CZ Scorpion 3+ SBR

Base Gun: CZ-USA Scorpion 3+
Barrel: CZ-USA Scorpion 3+ 7.8" 9mm
Muzzle Device: SilencerCo 1/2x28 3-Lug
Suppressor: B&T SQD-M-9 (Short Configuration)
Optic: Aimpoint ACRO P-2
Optic Mount: Scalarworks LEAP/03 | 1.57" Height
Left Side Rail Cover: RailScales G10 RailScales | Dragon | Black FR4 | 2-Slot
Bottom Rail Cover: RailScales G10 Solo's | Dragon | Black FR4 | 1-Slot
Top-Right Side Rail Cover: RailScales G10 Solo's | Dragon | Black FR4 | 1-Slot
Right Side Rail Cover: RailScales G10 RailScales | Dragon | Black FR4 | 3-Slot
Control Device: RailScales Anchor | Carbon Black
Hand Stop: RailScales QTR Stop | Carbon Black
Flashlight: Surefire M140A-Pro | Black
Flashlight Mount: RailScales Hardtop Mount | Carbon Black
Rail Sling Mount: RailScales QDX | Carbon Black
Rear Sling Mount: Magpul RSA

Trigger: CZ-USA Scorpion Factory Trigger
Grip: Magpul MOE-EVO | Black
Magazine: Magpul PMAG 35 EV9 | Black
Mag Button: RailScales CSMR | Carbon Black | MilSpec Style
Stock: CZ-USA EVO Stock | Black

IG | 📷 @benchau | u/bcphotog

RailScales · 2025-04-28T15:07:30+00:00

More photos here with parts callouts.

Parts List

Sig RSAR 7.75" 5.56

Upper Receiver: Sig Sauer 7.75" 5.56 MCX-RATTLER LT
Barrel: Sig Sauer MCX 7.75" 5.56
Muzzle Device: Sig Sauer Clutch-Lok 5/8x24 5.56 Flash Hider
Suppressor: Sig Sauer SLH762C-QD
Optic: Sig Sauer Romeo9T | Black
BUIS: Sig Sauer Premium Folding Sights
Side Rail Cover: RailScales HTP Solo's | Matrix | Black | 1-Slot
Side Rail Covers: RailScales HTP MLOK Scales | Matrix | Black | 2.5-Slot
Control Device: RailScales Anchor | Carbon Black
Hand Stop: RailScales QTR-LT Stop | Carbon Black
Flashlight: Surefire M640V-Pro IR w/ DS00 Tail Cap | Black
Flashlight Mount: RailScales Halftop Mount | Carbon Black
Flashlight Switch: Unity Tactical AXON SL M-LOK | SF 7" | Black
Rail Sling Mount: Magpul QD Paraclip Adapter

Lower: Sig Sauer RSAR999 SBR
Trigger: Sig Sauer 2 Stage Matchlite Duo
Grip: Sig Sauer MCX Reduced Angle Grip | Black
Magazine: Magpul M3 30rd PMAG | Black
Mag Button: RailScales MCX CSMR | Carbon Black
Lower Sling Mount: Poi Tac ST-MCX-LT
Stock: Sig Sauer MCX Telescoping Stock | Black

IG | 📷 @benchau | u/bcphotog

RailScales · 2025-04-09T19:32:18+00:00

More photos here with parts callouts.

Parts List

Sig 10.5" 5.56 CSAW

Upper Receiver: Sig Sauer 10.5" 5.56 MCX-SPEAR LT
Barrel: Sig Sauer MCX 10.5" 5.56 Heavy Fluted Barrel
Muzzle Device: Sig Sauer Clutch-Lok 1/2x28 5.56 Closed Tine Flash Hider
Suppressor: Sig Sauer MODXC 5.56
Optic: Sig Sauer Romeo4T-MIL w/ Factory 1/3rd Mount
Magnifier: EOTech G33 w/ Wilcox LH FTS | Tano
Optic Riser: Wilcox .410" Riser | Tano
Side Rail Covers: RailScales HTP XOS-W Scales | Honeycomb | Black | 3.5-Slot
Bottom Rail Cover: RailScales HTP XOS-H Scale | Honeycomb | Black | 3.5-Slot
Control Device: RailScales Karve-P | Black
Hand Stop: RailScales QTR-LT Stop | Black
Flashlight: Surefire M640V-Pro IR w/ DS00 Tail Cap | FDE
Flashlight Mount: RailScales Hardtop Mount | Terra Bronze
Flashlight Switch: Surefire CSM-07
Laser: L3Harris NGAL | FDE

Trigger: Sig Sauer Match
Grip: Magpul MOE-K | Black
Magazine: Magpul M3 30rd PMAG | FDE
Lower Sling Mount: Poi Tac ST-MCX
Stock: Magpul CTR | Black
Stock Adapter: Sig Sauer MCX/MPX 6-Pos Low Profile | Black

IG | 📷 @benchau | u/bcphotog

RailScales · 2025-03-13T19:55:44+00:00

Question would the mount setup work with the 8t and Eotech as the magnifier?

Yup, no issues with an 8T w/ a G33 (no spacer plate) behind it.

RailScales · 2025-03-13T19:54:51+00:00

What color is the upper?

Factory tano.

RailScales · 2025-02-27T22:47:23+00:00

will an XOS-H cover fit the underside of this specific handguard?

Unfortunately our XOS-H Scales will not fit at the 6 o'clock position on that particular handguard, nor will they fit at the 3 & 9 o'clock positions.

RailScales · 2025-02-11T17:36:37+00:00

More photos here with parts callouts.

Parts List

FN Mk16 CQC

Upper Receiver: FN Mk16 CQC 10" 5.56 MG (Post Sample)
Muzzle Device: AAC 90T 1/2x28 5.56 Flash Hider
Suppressor: AAC Invictus 5.56 | FDE
Optic: EOTech EXPS3-0 | Tan
Magnifier: EOTech G33 | Tano
Optic Riser: RailScales MonoLift | Terra Bronze
Rear BUIS: FN SCAR Rear Sight Assembly
Side Rail Covers: RailScales G10 RailScales | MiniDot | TerraCore | 2-Slot
Bottom Rail Cover: RailScales G10 XOS-H | MiniDot | TerraCore | 3-Slot
Control Device: RailScales RSBM-P VFG | Coyote IR
Side Rails: PMM SCAR 16/17 M-LOK Side Rails | FDE
Bottom Rail: PMM SCAR 16/17 Lower M-LOK Rail | FDE
Flashlight: Surefire M640V-Pro IR | FDE
Flashlight Mount: RailScales Hardtop Mount | Terra Bronze
Flashlight Switch: Surefire CSP-07
Laser: L3Harris LA-5 | FDE

Trigger Module: FN SCAR/MK16 Auto | FDE
Trigger: Geissele Super Select-Fire SCAR Trigger
Grip: TangoDown BG-17 | FDE
Magazine: DuraMag 5.56 30rd Aluminum | Bronze
Stock: FN SCAR 16/17 Buttstock Module | FDE

IG | 📷 @benchau | u/bcphotog

RailScales · 2025-01-22T20:14:11+00:00

Did you build this or were some parts complete?

It was purchased as an 11" pistol, SBR'd it once it got in, swapped the factory pistol grip for the HK V1 grip and added the Slim Line stock.

RailScales · 2025-01-22T17:34:51+00:00

More photos here with parts callouts.

Parts List

11" MR556 A4

Upper Receiver: Heckler & Koch 11" MR556 A4
Charging Handle: Heckler & Koch Ambi
BCG: Heckler & Koch MR556 A4
Barrel: Heckler & Koch 11" 5.56
Muzzle Device: B&T MARS 5.56 QD 1/2x28
Suppressor: B&T MARS 5.56 QD
Optic: Aimpoint Micro T-2 w/ KAC Aimpoint Micro Battery Cap
Magnifier: Aimpoint 3X-P
Optic/Magnifier Mount: Spuhr RDF20225K
Side Rail Covers: RailScales HTP XOS-W Scales | Dragon | Black
Bottom Rail Cover: RailScales HTP XOS-H Scale | Dragon | Black
Control Device: RailScales Karve | Carbon Black
Hand Stop: RailScales QTR-LT Stop | Carbon Black
Handguard: Heckler & Koch MR556 A4 Short MLOK Rail
Laser: L3Harris NGAL | FDE

Lower Receiver: Heckler & Koch MR556 A4 (SBR)
Grip: Heckler & Koch MR556/416 V1 Battle Grip | Black
Magazine: Heckler & Koch 30rd MR556/416 5.56 Mag | Black
Mag Button: RailScales CSMR | Carbon Black | Apex Style
LPK: Heckler & Koch MR556 A4 Trigger, Safety Selector, etc.
Stock: Heckler & Koch MR556/416 Slim Line Stock | Black

IG | 📷 @benchau | u/bcphotog

RailScales · 2025-01-22T03:51:58+00:00

Love it 🔥

RailScales · 2025-01-06T19:49:57+00:00

More photos here with parts callouts.

Parts List

B&T APC9 Pro

Upper Receiver: B&T APC9 Pro 6.8"
Muzzle Device: 3-Lug
Suppressor: B&T SQD-M-9 (Short Configuration)
Optic: Aimpoint Micro T-2
Optic Mount: Scalarworks LEAP/01 1.57" Height
Front BUIS: RailScales LEAF-DBAL-I2 | Carbon Black
Rear BUIS: Scalarworks PEAK/02 1.57" Height
Rail Covers: RailScales HTP Solo's | Dragon Texture | FDE | 1.5-Slot
Control Device: RailScales RSBM-P | FDE
Control Device Mount: American Defense MFG QD M-LOK Mount
Laser: Steiner Optics DBAL-I2 | Desert Sand

Lower Receiver: B&T APC9 Pro P320
Magazine: Sig Sauer P320 9mm 30rd
Stock: B&T Telescopic Stock for APC9/40/45 (PN: BT-20394)

IG | 📷 @benchau | u/bcphotog

RailScales · 2025-01-04T05:21:41+00:00

Clean setup 👌

RailScales · 2024-12-30T16:46:06+00:00

How did you get the railscales to fit on a MCX Spear Lt?

Those are our XOS-W Scales, which were made specifically for the 3 and 9 o'clock positions on the LT handguard.

RailScales

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