Sig Sauer MCX Blackout for sale
Updated · 22 products · 5 in stock · prices refreshed daily
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Sig Sauer MCX Spear-LT IR Coyote Brown .300 AAC Blackout 9" Barrel 30-Rounds
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
9"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Coyote Brown
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Sig Sauer MCX Rattler LT .300 BLK 6.75" 1:5" CHF Bbl Black Pistol w/(1) 30rd Mag PMCX-300B-6B-LT-PCB
Action:
Semi-Auto
Barrel Length:
6.75"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Black
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Sig Sauer MCX SPEAR-LT .300 Blackout 9" 1:5" Bbl Black Short Barrel Rifle w/(1) 30rd Magazine (NFA) WRMCX-300B-9B-LT-SBR
Brand:
Sig Sauer
Action:
Semi-Auto
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Black
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Sig Sauer MCX Spear 300 Blackout 9" 30rd Pistol, Black - PMCX-300B-9B-LT-B
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
9"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Black
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Sig Sauer MCX Rattler LT SBR .300 AAC Blackout 6.75" Barrel 30-Rounds
Action:
Semi-Auto
Barrel Length:
6.75"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Black
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SIG SAUER SIGMCX Virtus Patrol .300BLK 16in 30rd Flat Dark Earth Semi-Automatic Rifle (RMCX-300B-16B-TAP-P-FDE)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
16"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Flat Dark Earth
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SIG SAUER SIGMCX Virtus .300BLK 9in 30rd Flat Dark Earth Pistol (PMCX-300B-9B-TAP-FDE)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
9"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Flat Dark Earth
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SIG SAUER SIGMCX Patrol .300BLK 16in 30rd Semi-Automatic Rifle (RMCX-300B-16B-TELE-P)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
16"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Black
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SIG SAUER SIGMCX 300 Blackout 9in 30rd FDE Semi-Auto Rifle (RMCX-300B-9B-IR-SBR)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
9"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Flat Dark Earth
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Sig Sauer Sig MCX Virtus .300 Blackout/5.56 Semi-Automatic AR Pistol - PMCX-11B-TAP-CO
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
11.5"
Caliber:
5.56×45mm NATO
Capacity:
15
Finish Per Color:
Grey
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Sig Sauer PMCX-300B-5B-TAP-CAN-BN-NB MCX Canebrake Coyote Tan/Black 300 Blackout 5.5
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
5.5"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Coyote Tan
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Sig Sauer MCX Virtus 300 Blk 9" 30 Round Pistol, Stealth Gray
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
9"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Grey
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SIG SAUER MCX RATTLER PISTOL .300 AAC BLACKOUT 5.5" 30RD BLACK NB
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
5.5"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Black
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SIG Sauer MCX Rattler PCB .300 AAC Blackout in Black
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
5.5"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Coyote Tan
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Sig Sauer MCX Rattler 5.5" 300AAC Pistol with Adjustable Brace, Black - PMCX-300B-5B-TAP
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
5.5"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Black
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SIG SAUER MCX Rattler 300 BLK 5.5in 30rd Black Pistol (PMCX-300B-5B-TAP)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
5.5"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Black
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SIG SAUER MCX Rattler 300 AAC Blackout 6.75in 30rd Miami Tiger Stripe Semi-Auto Pistol (PMCX-300B-6B-LT-MTS)
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
6.75"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Tiger Stripe
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Sig MCX-SPEAR LT SBR .300 Blackout, 9" Barrel, M-LOK, Folding Stock, Coyote, 30rd
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
9"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Coyote Tan
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Sig MCX-SPEAR LT Pistol .300 Blackout, 9" Barrel, M-LOK, Coyote, 30rd
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
9"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Coyote Tan
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Sig MCX TACOPS 300 Blackout 6.75" Pistol, Black - PMCX-300B-6B-TAP-TACOPS
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
6.75"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Black
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Sig MCX Rattler SBR 300 Blackout, 5.5", Minimalist Stock, Alum M-LOK HG, 1x30rd All NFA Rules Apply
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
5.5"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Black
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MCX Rattler LT 300 AAC Blackout 6.75" BBL (1)30RD Mag Black
Brand:
Sig Sauer
Action:
Semi-Auto
Barrel Length:
6.75"
Caliber:
.300 AAC Blackout
Capacity:
30
Finish Per Color:
Black
Frequently Asked Questions
Sig Sauer MCX Blackout for sale
How much is the SIG MCX Rattler 300 blackout?
SIG Sauer MCX Rattler in .300 Blackout typically runs around $2,599 on the market, with most listings falling between $2,128 and $2,930 across various retailers. MSRP sits at $2,499–$2,539.
Is the MCX 300 blackout?
Yes. SIG Sauer offers several MCX variants chambered in .300 Blackout, including the MCX Rattler, MCX Spear LT, and MCX Virtus. The Virtus is also available in 5.56 NATO and 7.62x39. We carry several of these variants in our marketplace.
Can civilians buy a SIG MCX?
Yes. SIG Sauer produces several civilian MCX models, including the MCX Rattler (.300 Blackout), MCX Spear (7.62x51, 6.5 Creedmoor), and MCX Virtus (multiple calibers). All are semi-automatic. We list five variants across 27 retailers.
Is the SIG MCX any good?
The SIG MCX is well-regarded for reliability, modularity, and build quality. Its short-stroke piston system runs cleaner than direct impingement designs. The Virtus and Spear LT variants are popular for defense and range use. It's a premium rifle with a price to match, typically $2,500+.
What are the drawbacks of a 300 Blackout pistol?
.300 Blackout pistols have limited effective range, typically under 200 yards for reliable terminal performance. Ammunition costs more than 5.56 NATO. Short barrels reduce velocity significantly. Dangerous ammo mix-up with 5.56 is a serious risk since both use the same platform. Recoil exceeds 5.56, and barrier over-penetration makes home defense use problematic.
What does sig mcx mean?
MCX stands for Mission Configurable Weapon System. SIG Sauer's MCX is a line of modular semi-automatic rifles and carbines, including the Rattler, Virtus, and Spear. Available in calibers ranging from .300 Blackout to 7.62x51, they are used for defense, hunting, and range shooting.
What is the effective range of a 300 Blackout suppressed?
Suppressed .300 Blackout effective range depends on ammunition. Supersonic loads are reliable to 200–300 yards. Subsonic rounds perform best within 100–150 yards due to lower velocity and energy retention. For hunting, most shooters keep shots under 300 yards regardless of load.
What is the best optic for a 300 blackout SBR?
For close-quarters use with subsonic loads, a red dot or 1-4x scope works well. For mixed subsonic/supersonic use at longer ranges, a 1-6x FFP scope eliminates holdover confusion. Match the optic to your primary use case rather than chasing a single "best" option.
