Loading Gun Wise

[SYS.ONLINE]Mattoon, Illinois - Mission Ready

Shop all Firearms->

Semi-Automatic Pistols

Lever-Action Pistols

Single-Shot Pistols

Bolt-Action Pistols

Pump-Action Pistols

Combination Guns

Single-Shot Shotguns

Semi-Automatic Shotguns

Side-by-Side Shotguns

Lever-Action Shotguns

Pump-Action Shotguns

Over/Under Shotguns

Bolt-Action Shotguns

Black Powder Firearms

Single-Shot Rifles

Semi-Automatic Rifles

Ar-15 / Modern Sporting Rifles

Bolt-Action Rifles

Falling-Block Rifles

Short-Barreled Rifles

Lever-Action Rifles

Rolling-Block Rifles

Pump-Action Rifles

Shop all Ammo->

Rifle Ammunition

Other Rifle Ammunition

.243 Winchester

.22-250 Remington

.300 Aac Blackout

.30-06 Springfield

.308 Winchester

.300 Winchester Magnum

.30-30 Winchester

.270 Winchester

7mm-08 Remington

.338 Lapua Magnum

7mm Remington Magnum

.25-06 Remington

.338 Winchester Magnum

.450 Bushmaster

.360 Buckhammer

.45-70 Government

7mm Remington Sa Ultra Magnum

Handgun Ammunition

Other Handgun Ammunition

.41 Remington Magnum

.500 S&W Magnum

.327 Federal Magnum

.50 Action Express

.460 S&W Magnum

Shotgun Ammunition

Rimfire Ammunition

Other Rimfire Ammunition

Shop all Optics->

Variable-Power Scopes

Fixed-Power Scopes

Low-Power Variable Optics

Crossbow Scopes

Optic Accessories

Protective Covers

Parallax Wheels

Anti-Reflection Devices

Lens Covers & Sunshades

Binocular Harnesses

Binocular Cases

Turret Accessories

Remote Controls

Spotting Scopes

Angled Spotting Scopes

Straight Spotting Scopes

Rangefinding & Observation

Spotting Scopes

Red Dots & Reflex Sights

Enclosed Red Dots

Pistol Red Dots

Open Reflex Sights

Optic Mounts & Rings

Mount Accessories

Cantilever Mounts

Quick-Detach Mounts

One-Piece Scope Mounts

Magnifier Mounts

Roof-Prism Binoculars

Porro-Prism Binoculars

Rangefinding Binoculars

Compact Binoculars

Prism & Holographic Sights

Holographic Sights

Night Vision & Thermal

Thermal Rifle Scopes

Thermal Monoculars

Thermal Binoculars

Thermal Accessories

Thermal Clip-Ons

Thermal Handhelds

Thermal Pistol Sights

Thermal Cameras

Night-Vision Accessories

Night-Vision Scopes

Night-Vision Binoculars

Night-Vision Monoculars

Night-Vision Goggles

Fiber-Optic Sights

Sight Accessories

Scope Mounts & Rings

Laser Rangefinders

Parts & Accessories

Shop all Parts & Accessories->

5.56 Suppressors

Multi-Caliber Suppressors

Rimfire Suppressors

Suppressor Accessories

Pistons & Adapters

Suppressor Mounts

Rifle Suppressors

Handgun Suppressors

Shotgun Suppressors

Suppressor Covers

Suppressor Cases & Pouches

Holsters & Carry

Inside-Waistband Holsters

Magazine Pouches

Outside-Waistband Holsters

Shoulder Holsters

Paddle Holsters

Holster Accessories

Pocket Holsters

Dual-Carry Holsters

Ammunition Pouches

Belly-Band Holsters

Speedloader Pouches

Concealed-Carry Bags

Concealed-Carry Accessories

Crossdraw Holsters

Mounted Holsters

Drop-Leg Holsters

Lights & Lasers

Light Accessories

Pressure Switches

Light-Laser Combos

Muzzle Device Accessories

Thread Protectors

Suppressor Mounts

Handgun Triggers

Two-Stage Triggers

Single-Stage Triggers

Shotgun Triggers

Semi-Auto Pistols

Rifle Magazines

Magazine Accessories

Magazines & Loaders

Rifle Magazines

Magazine Accessories

Handgun Magazines

Magazine Extensions

Shotgun Magazines

Ammunition Holders

Magazine Loaders

Stocks, Braces & Furniture

Stock Accessories

Recoil Pads & Spacers

Slings & Swivels

Single-Point Slings

Sling Accessories

Three-Point Slings

Two-Point Slings

Convertible Slings

Vertical Foregrips

Angled Foregrips

Grip Accessories

Handguards & Rails

Handguard Accessories

Picatinny Rails

Firearm Components

Upper Receivers

Conversion Kits

Lower Receivers

Barreled Actions

Barrels & Muzzle Devices

Buffer Tubes/Buffers & Springs

Conversion Kits

Receiver Accessories

Lower Parts Kits

Charging Handles

Magazine Catches & Releases

Small Parts & Springs

Bolt Carrier Groups

Safety Selectors

Gas System Parts

Upper Parts Kits

Hammer Extensions

Screws & Hardware

Receiver Covers

Safety Plungers

Upper Receivers & Assemblies

Bipods & Shooting Rests

Tripod Accessories

Bipod Accessories

Rest Accessories

Shooting Rest Accessories

Shooting Sticks

Barrel Accessories

Handgun Barrels

Shotgun Barrels

Threaded Barrels

Semi-Auto Rifles

Semi-Auto Pistols

Other Accessories

Shop all Gear->

Air Guns & Accessories

Air Gun Accessories

Practice Projectiles

Spring / Piston Pistols

Outdoor & Camping

Food & Beverages

Insect Repellents

Tents & Shelters

Utility Dry Boxes

Weather Meter Accessories

Tent Accessories

Cooler Accessories

Metal Detectors

Heater Accessories

Metal Detector Accessories

Reloading Supplies

Muzzleloading Accessories

Muzzleloader Bullets & Sabots

Reloading Bullets

Reloading Accessories

Reloading Manuals

Reloading Tools

Case Preparation

Tumblers & Media

Reloading Presses

Powder Measures & Scales

Decapping Parts

Die Parts & Accessories

Packs, Bags & Pouches

Utility Pouches

Hydration Packs

Pouch Accessories

Range Accessories

Brass Collection Bags

Recoil Protection

Barrel Cooling Devices

Archery Accessories

Bow Accessories

Gifts & Novelties

Desk Accessories

Holiday Decorations

Green-Gas Airsoft Pistols

Co2 Airsoft Pistols

Pcp Air Shotguns

Camping & Outdoor

Fixed-Blade Knives

Out-The-Front Knives

Axes & Hatchets

Tool Accessories

Knife Sharpeners

Throwing Knives

Automatic Knives

Knife Accessories

General Supplies

Watches & Wearables

Battery Chargers & Cables

Identification Tags

Adhesives & Repair

Storage Containers

Battery Chargers

Nutrition Supplements

Dietary Supplements

Decor & Signage

Games & Puzzles

Straps & Fasteners

Portable Speakers

Writing Instruments

Safety & Protection

Safety Accessories

Electronic Hearing Protection

Passive Hearing Protection

Personal Alarms & Whistles

Eye & Ear Protection Kits

Hearing Enhancers

Handcuff Accessories

Hearing Protection Accessories

Targets & Training

Reactive Targets

Adhesive Targets

Target Accessories

Dummy Rounds & Snap Caps

Clay Target Throwers

Target Throwers

Archery Targets

Thermal Targets

Cleaning & Maintenance

Cleaning Accessories

Lubricants & Protectants

Solvents & Degreasers

Refinishing Supplies

Air Gun Accessories

Practice Projectiles

Magazines & Clips

Air Gun Adapters

Airgun Shotshells

Spring / Piston Rifles

Pump Air Rifles

Other Air Rifles

Spring / Piston Pistols

Pump Air Pistols

Safes & Storage

Vault Accessories

Reference Guides

Traps & Trapping Supplies

Hunting Accessories

Hunting Saddles

Game Processing

Decoy Accessories

Trail Camera Accessories

Game Call Accessories

Tree Stand Accessories

Food Plot Supplies

Game Feeder Accessories

Blind Accessories

Hunting Safety Harnesses

Slingshot Accessories

Clothing & Footwear

Jackets & Outerwear

Hats & Headwear

Boots & Footwear

Bibs & Coveralls

Apparel & Footwear Care

Camouflage Suits

Footwear Accessories

Safes & Security

Security Alarms

Vault Accessories

Security Cameras

Diversion Safes

Lock Accessories

Gunsmithing Tools

Vices & Cradles

Bore-Sighting Tools

Torque Wrenches

Screwdrivers & Bits

Gunsmithing Tool Kits

Inspection Cameras

Bench Accessories

Firearm Cases & Storage

Firearm Storage Accessories

Concealment Furniture

Magazine Storage

Medical & Emergency

Emergency Tools

Bite & Sting Care

Medical Pouches

First-Aid Supplies

Hunting & Outdoor

Trail Camera Accessories

Golf Accessories

Wildlife & Birding

Loading Gun Wise

Mission-ready firearms, ammunition, optics, and range gear for responsible owners who value precision and performance.

Loading...

© 2026 GUN WISE. ALL RIGHTS RESERVED.

ALL FIREARM SALES ARE SUBJECT TO FEDERAL, STATE, AND LOCAL LAW.

Shop

Firearms
Ammunition
Optics & Sights
Shooting Accessories
Featured Products

Support

Shipping & Returns
Contact Us
My Account
Order History
Cart

Company

About Us
Our Blog
Privacy Policy
Terms & Conditions
Gift Certificates

Sig Sauer MCX Spear 7.62x51mm NATO | Gun Wise

Home
Semi-Automatic Rifles
MCX Spear 7.62x51mm NATO

Loading...

Sig Sauer RSPEAR76216B MCX Spear 7.62x51mm NATO 20+1 16", Coyote, Magpul SL-K Folding Stock, OEM Polymer Grip, SLX/SLH QD Flash Hider, Ambi Controls, Adj. Gas Block

Price

$3,614.60

MCX Spear 7.62x51mm NATO

Sig Sauer

Based on the U.S. Army's next generation Squad weapon (NGSW) Rifle. Features ambidextrous bolt catch/release; rear and side charging handle; folding & telescoping Magpul SL-M stock; 2 Position Adjustable Gas Valve and interchangeable barrel. Includes…Full description

Based on the U.S. Army's next generation Squad weapon (NGSW) Rifle. Features ambidextrous bolt catch/release; rear and side charging handle; folding & telescoping Magpul SL-M stock; 2 Position Adjustable Gas Valve and interchangeable barrel. Includes SLX/SLH QD flash hider and a 20rd magazine.

Sig Sauer RSPEAR76216B MCX Spear 7.62x51mm NATO 20+1 16", Coyote, Magpul SL-K Folding Stock, OEM Polymer Grip, SLX/SLH QD Flash Hider, Ambi Controls, Adj. Gas Block

Technical specifications

Loading...

Pricing

$3,614.60

Loading...

MPN: RSPEAR76216B
UPC: 798681674022
Brand: Sig Sauer
Caliber: 7.62x51mm NATO
Action: Semi-Auto

150 available

Barrel length

16"

Overall length

46.4

Weight

9.20 lbs

Capacity

20+1

Width

11.4

Height

4.3

Hand

Ambidextrous

Muzzle

QD Flash Hider

Safety

Ambidextrous

Sights

None

Trigger

Two Stage Match

Similar products

Closest matches by brand, type, and specifications.

Loading...

Sig Sauer RM400556N16BFORGECON M400 Forge 5.56 NATO 30+1 16" Concrete Gray Cerakote Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR

Sig Sauer RM400556N16BFORGECON M400 Forge 5.56 NATO 30+1…

MPN: RM400556N16BFORGECON
UPC: 798681744183

$1,006.95

Ready to ship

Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II R

Sig Sauer RM400556N16BFORGE10 M400 Forge 5.56 NATO 10+1…

MPN: RM400556N16BFORGE10
UPC: 798681744121

$914.55

Ready to ship

Sig Sauer RM400556N16BFORGEMSGRN M400 Forge 5.56 NATO 30+1 16" Moss Green Cerakote Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR

Sig Sauer RM400556N16BFORGEMSGRN M400 Forge 5.56 NATO 30+1…

MPN: RM400556N16BFORGEMSGRN
UPC: 798681744206

$1,006.95

Ready to ship

Sig Sauer RM400556N16BFORGE M400 Forge 5.56 NATO 30+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul SL-K Black Polymer Stock, Black Polymer Grip, Sig ROMEO MSR Gen II Red

Sig Sauer RM400556N16BFORGE M400 Forge 5.56 NATO 30+1…

MPN: RM400556N16BFORGE
UPC: 798681744114

$914.55

Ready to ship

Sig Sauer RM400556N16BFORGECA M400 Forge *CA Compliant 5.56 NATO 10+1 16" Black Anodized Alloy Receiver w/Picatinny Rail, M-LOK Handguard, Magpul MOE Black Polymer Stock, Shark Fin Grip, Sig ROMEO MSR

Sig Sauer RM400556N16BFORGECA M400 Forge *CA Compliant 5.56…

MPN: RM400556N16BFORGECA
UPC: 798681744138

$914.55

Ready to ship

Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16" Black FNC Chrome Moly Steel Barrel, Black Anodized Aluminum Receiver, 15" M-LOK Handguard, Synthetic Magpul SL-K Stock, Black Polymer Grip

Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm 30+1 16"…

MPN: RM400SDI16BP
UPC: 798681664634

$1,348.82

Ready to ship

Sig Sauer R516G3-556N-16B-CP1-10 516 G3 223 Rem/5.56 NATO 10+1 16" Threaded Barrel, Picatinny Rail Receiver, M-LOK Handguard, Ambidextrous

Sig Sauer R516G3-556N-16B-CP1-10 516 G3 223 Rem/5.56 NATO…

MPN: R516G3-556N-16B-CP1-10
UPC: 798681746125

$2,099.99

Ready to ship

dSIG MCX SPEAR LT RFL 5.56 FDE 16"BBL, 13" LW HG, PUSH BTN FLD STOCK

dSIG MCX SPEAR LT RFL 5.56 FDE 16"BBL

MPN: RMCX-556N-16B-LT
UPC: 798681660872

$2,380.35

Out of stock