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NEW Ballistic Advantage 14.5" Government Profile Barrel Front Sight Post 5.56 NATO

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Beautiful AR15 5.56 NATO Government Profile Barrel FDE Magpul Furniture Front Sight Post

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Workhorse Spikes tactical AR15 5.56 NATO 16" Mid-Length Gas Rifle Front Sight Adjustable Stock: Up for auction is a custom AR-15 chambered in 5.56 NATO. Featuring a 16-inch barrel and a mid-length gas system, this rifle offers one of the most desirable configurations available on the AR platform

Workhorse Spikes tactical AR15 5.56 NATO 16" Mid-Length Gas Rifle Front Sight Adjustable Stock

Old Steel Historical Firearms LLC

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Gorgeous AR15 16" Barrel Carbine Gas System 5.56 NATO Rifle: Up for auction is a custom AR-15 chambered in 5.56 NATO. Featuring a versatile 16-inch barrel and carbine-length gas system, this rifle represents one of the most popular and proven AR-15 configuratio

Gorgeous AR15 16" Barrel Carbine Gas System 5.56 NATO Rifle

Old Steel Historical Firearms LLC

$175

(2 bids)

NEW Ballistic Advantage 14.5" Government Profile Barrel Front Sight Post 5.56 NATO

Old Steel Historical Firearms LLC

$60

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20" 5.56 NATO HBAR Barrel Front Sight Post AR15 Rifle Barrel

Old Steel Historical Firearms LLC

$30

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Anderson AM-15 5.56 NATO Semi Auto Rifle: Serial: 24109297 Manufacturer: Anderson Mfg. Model: AM-15 Caliber: 5.56 NATO (1/7) Barrel length: 17.5 in. w/ flash hider OAL: 32.75-36.25 in. Condition: Very Good-light used condition; bore is g

Jul 11, 2026

Anderson AM-15 5.56 NATO Semi Auto Rifle

Vogt Auction Texas

$250

PSA PA-15 5.56 NATO Semi Auto Rifle: Serial: DCSF130839 Manufacturer: Palmetto State Armory Model: PA-15 Caliber: 5.56 NATO (1/7 twist) Barrel length: 17.5 in. w/ flash hider OAL: 32.5-35.75 in. Condition: Very good; lightly used conditi

Jul 11, 2026

PSA PA-15 5.56 NATO Semi Auto Rifle

Vogt Auction Texas

$225

Clean Colt Defense M4 5.56 NATO Semi Auto Carbine: Serial: CR202951 (upper SN: 13629) Manufacturer: Colt Defense Model: M4 Carbine Caliber: 5.56 NATO (1/7 twist) Barrel length: 17.5 in. w/ flash hider OAL: 32.75-36 in. Condition: Very good; very light

Jul 11, 2026

Clean Colt Defense M4 5.56 NATO Semi Auto Carbine

Vogt Auction Texas

$300

(1 bid)

Approx. 1100 Rounds of Mixed 223 / 5.56 NATO Ammunition: Includes: -350 rounds of Remington 223 55gr MC -500 rounds of American Eagle 223 55gr FMJ -140 rounds of Winchester Ranger 223 55gr PSP -40 rounds of PMC X-Tac 5.56 NATO 55gr FMJ -160 rounds of Winche

Jul 11, 2026

Approx. 1100 Rounds of Mixed 223 / 5.56 NATO Ammunition

Vogt Auction Texas

$175

Amazing AR15 5.56 NATO 18" Barrel Free Float KeyMod Rifle: Up for auction is a custom AR-15 chambered in 5.56 NATO. Featuring an 18-inch barrel and a free-float KeyMod handguard, this rifle bridges the gap between a traditional carbine and a dedicated precisi

Amazing AR15 5.56 NATO 18" Barrel Free Float KeyMod Rifle

Old Steel Historical Firearms LLC

$200

(3 bids)

Amazing AR15 5.56 NATO 16" Carbine Gas Lightweight KeyMod Rifle: Up for auction is a custom AR-15 chambered in 5.56 NATO. Featuring a versatile 16-inch barrel and a proven carbine-length gas system, this rifle delivers the reliability and handling characteristics t

Amazing AR15 5.56 NATO 16" Carbine Gas Lightweight KeyMod Rifle

Old Steel Historical Firearms LLC

$400

(3 bids)

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36 past auction results for "sig-556-scm"

Browse a record of outcomes from past auctions, including sale prices and unsold items.

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Sig 556 5.56 Nato EOTEC Sight System JTO20130: Sig 556 5.56 Nato EOTEC Sight System JTO20130

2021

Sig 556 5.56 Nato EOTEC Sight System JTO20130

Swisher Bros. Auction LLCShelbyville, KY

SIG 5.56 RIFLE WITH FACTORY FOLDING STOCK.: Cal. 5.56MM. S# JT024439. Bbl. 16". Cold hammer forged bbl. chambered in 5.56mm NATO, w/ a twist rate of 1:7 & terminated w/ a threaded muzzle & A2 style flash hider. Vented quad rail forearm proving

2021

SIG 5.56 RIFLE WITH FACTORY FOLDING STOCK.

Poulin Antiques & AuctionsFairfield, ME

SIG SAUER RM400 16B TRD BDX 5.56 SEMI RIFLE NIB: New in box black Sig Sauer RM400 16B TRD BDX semi-automatic rifle with scope. Steel, aluminum, and polymer construction. 16 inch barrel. 30 round magazine. Maker marks and serial number to left receiv

2021

SIG SAUER RM400 16B TRD BDX 5.56 SEMI RIFLE NIB

Affiliated AuctionsTallahassee, FL

SIG SAUER SIG516 SEMI AUTO RIFLE 5.56 NATO BLACK: All black steel and polymer construction, maker, model, and serial number marked to left side, 5.56 Nato 1/7 marked to barrel end, picatinny rail system, barrel measures 17.5 inches with bright clean

2020

SIG SAUER SIG516 SEMI AUTO RIFLE 5.56 NATO BLACK

Affiliated AuctionsTallahassee, FL

BOXED SIG SAUER M400 SEMI AUTO AR 5.56 PISTOL: SERIAL 20C077376. BARREL: 13" CALIBER: 5.56 NATO. AR Pistol with wrist brace and buffer tube cover. Features USGI style flash suppressor, bayonet lug, quad Picatinny rails, and equipped with rear flip

2020

BOXED SIG SAUER M400 SEMI AUTO AR 5.56 PISTOL

Milestone AuctionsWilloughby, OH

BOXED SIG SAUER M400 SEMI AUTO AR 5.56 PISTOL: SERIAL 20C077377. BARREL: 13" CALIBER: 5.56 NATO. AR Pistol with wrist brace and buffer tube cover. Features USGI style flash suppressor, bayonet lug, quad Picatinny rails, and equipped with rear flip

2020

BOXED SIG SAUER M400 SEMI AUTO AR 5.56 PISTOL

Milestone AuctionsWilloughby, OH

SIG SAUER MODEL M400 RIFLE 5.56 CALIBER: SIG SAUER MODEL M400 RIFLE 5.56 CALIBER Caliber / Gauge: 5.56mm Barrel Length: 18" Serial Number: 20C063994

2019

SIG SAUER MODEL M400 RIFLE 5.56 CALIBER

Centurion AuctionsTallahassee, FL

(M) Sig Sauer 556 Semi-Automatic Rifle with: Sig Sauer Model 556 semi-automatic clip fed tactical rifle. Comes with Eco Tech military sight, picatinny rail, adjustable side grips, adjustable front grip light, ambidextrous safety, Mag-Pul adjusta

2019

(M) Sig Sauer 556 Semi-Automatic Rifle with

Dan Morphy AuctionsDenver, PA

Sig Sauer Rifle: Semi-Auto SIGM400 Series 5.56 NATO|223: Manufacturer: Sig Sauer Gun Type: Rifle: Semi-Auto Model Series: SIGM400 Caliber: 5.56 NATO|223 Action: Semi Automatic Magazine capacity: 30+1 Finish: Olive Drab Green Stock: Telescoping Stock Sights:

2017

Sig Sauer Rifle: Semi-Auto SIGM400 Series 5.56 NATO|223

Gun AvenueBluffton, SC

Sig Sauer M400 AR-15 5.56: THE SIG M 400 SERIES TACTICAL RIFLE, designed for use in law enforcement, military operations, or the sporting field as well as competitive shooting. The SIG M 400 is a true AR platform tactical rifle

2016

Sig Sauer M400 AR-15 5.56

Gun AvenueBluffton, SC

Sig Sauer Pistol: Semi-Auto SIGM400 Series 5.56 NATO: Manufacturer: Sig Sauer | Gun Type: Pistol: Semi-Auto | Model Series: SIGM400 | Caliber: 5.56 NATO | Action: Semi Automatic | Magazine capacity: 10+1 | Finish: Matte Black | Stock: SB-15 Pistol Stabil

2016

Sig Sauer Pistol: Semi-Auto SIGM400 Series 5.56 NATO

Gun AvenueBluffton, SC

_NEW!_ SIG SAUER SIGM400 SWAT 223 REM / 5.56 NATO: FAMILY:SIGM400 Series MODEL:SIGM400 SWAT TYPE:Rifle ACTION:Semi-Auto FINISH:Black STOCK/FRAME:Laminate Stock SPC FEATURE:Threaded Barrel Model CALIBER/GAUGE:223 Rem | 5.56 NATO CAPACITY:30+1 # OF MAGS

2015

_NEW!_ SIG SAUER SIGM400 SWAT 223 REM / 5.56 NATO

WorldCrest Auctions, IncArlington, TX

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