Outfitters Score™
Excellent
Sig Sauer, Inc. scores as a top-tier build with premium pricing and a bare-bones configuration.
Our proprietary rating combines brand tier, price percentile within the caliber, feature completeness, barrel versatility, retailer availability, caliber practicality, and use-case fit.
Short Barreled Rifle (SBR)
This is a Short Barreled Rifle (SBR) regulated under the National Firearms Act. Purchase requires an approved ATF Form 4 and $200 tax stamp. Transfer must go through a Class 3 SOT dealer.
Description
SIG SAUER MCX-SPEAR LT IR 5.56X45 NATO SBR SEMI-AUTO RIFLE Utilizing Cerakote Gen II IR Coating and SIG SAUER's Tele-fold stock design, the MCX-SPEAR LT IR offers reduced visibility under thermal or night view use while protecting the longevity of your firearm. The Cerakote Gen II IR Coating offers superior wear and corrosion resistance against adverse conditions enhancing the reliability of the rifle. The IR Series delivers the performance that has allowed the MCX to receive the nod from Special Forces Groups from around the world and reliability that makes it a SIG SAUER. FEATURES: Reduced IR Signature Gen II FDE Cerakote. Lightweight Er Mfg: Sig Sauer, Inc.
Full Specifications
Overview
| Brand | Sig Sauer, Inc. |
| Model | RMCX-556N-11B-IR-SBR |
| SKU | 430113878 |
| Rifle Type | semi auto |
| Platform | AR15 |
| Caliber | 5.56 NATO |
| UPC | 798681699681 |
Barrel
| Barrel Profile | lightweight |
Receiver
| Receiver Finish | cerakote |
| Forward Assist | No |
| Dust Cover | No |
Handguard
| Free Float | No |
Muzzle
| Suppressor Ready | No |
Sights & Optics
| Optic Ready | No |
Dimensions & Weight
| Magazine Capacity | 30 rounds |
Finish
| Finish | fde |
| Cerakote | Gen Ii |
Compliance
| CA Compliant | No |
| Classification | SBR (NFA) |
| NFA Item | Yes |
What's Included (Complete Rifle)
This is a complete, ready-to-shoot firearm.
Upper Receiver
Lower Receiver
Barrel
Bolt Carrier Group
Handguard
Stock
Grip
Trigger
Muzzle Device
Charging Handle
Gas Block
Gas Tube
Buffer Tube
Backup Iron Sights
Optic
Compare Similar Rifles
Springfield
SAINT Edge EVAC Pistol 5.56x45mm NATO 7.50" Barrel, Gearhead Works Tailhook Folding Stock, Riptilia CQG Grip, 20 Rd
Sons Of Liberty Gun Works
M4-Exo3 5.56x45mm Nato Semi-Auto Rifle - M4-Exo3 5.56 Nato 16" Bbl (3) 30-Rd Mag Desert Tiger Stripe
Iwi
Tavor Xb95 16.5in 5.56x45mm Nato Black 30+1rd - Tavor Xb95 16.5in 5.56x45mm Nato Black 30+1
Bravo Company
Recce 16 KMR-A Carbine 223 Rem/5.56mm, 16" Barrel, Dark Bronze Finish, Mod 0 Stock, Mod 3 Pistol Grip, KMR Alpha 15" Handguard, 30 Rd
POF
Wonder 223 Rem/5.56mm, 16.5" Barrel, Blue Titanium Cerakote, Mission First Tactical Stock, 14" M-LOK Renegade Rail, Single Port Micro-B Muzzle Brake, POF-USA 3.5lb Flat Trigger, Anti-Tilt Buffer Tube, 30rd
Springfield Armory
Hellion Bullpup 5.56 16" - Hellion Bullpup 5.56x45 Nato 16" Bbl (1)30rd Mag Od Green
Manufacturer · Tier 1
See everything Sig Sauer→
Build Guide
See our First Build Starter Kit→
State Check
This rifle has NFA or magazine considerations →
Swiss-origin firearms giant. The M400 and MCX platforms compete in the premium space, and Sig won the US Army NGSW rifle contract with the XM7.
View brand profile →Mcx-Spear Lt Ir 5.56x45 Nato Sbr Semi-Auto Rifle - Mcx-Spear Lt Ir 5.56x45 Nato 11.5" Bbl (1)30rd Mag Coyote
RMCX-556N-11B-IR-SBR
Across 1 retailer
Compare Prices
Build It Yourself
Want to customize? Build similar specs from individual parts.
State Legal Check
Prices are fetched from affiliate partners. AR15 Outfitters may earn a commission on purchases made through links on this site. This does not affect pricing or our recommendations.