
5.56x45 Rifles
- Out Of StockSPRINGFIELD ARMORY Hellion Low Capacity 5.56 NATO 16in 10rd Black Rifle (HL916556BLC)16" CMV BarrelIntegrated Flip-Up Front SightIntegrated Flip-Up Rear Sight with 5-Position ApertureProprietary Bolt Carrier Group2-Position Adjustable Gas System5-Position Adjustable Stock ...$1,722.99
- Out Of StockTROY SPC-A4 Gen2 5.56mm 16in 30rd Black Semi-Automatic Rifle (SCAR-CA4-16BT-23)16-inch barrelTroy 15.125" Gen2 SOCC RailTroy M4 front and round rear battlesightsTroy pneuma charging handleB5 stockTroy standard safetyTPRS 3-prong flash suppressorErgo suregripTroy super ...$1,059.10
- Out Of StockAERO PRECISION AR15 5.56mm NATO 16in 30rd Semi-Automatic Rifle (APCR640435)16" Mid-Length 5.56x45mm Government Profile1:7 4150 CMV QPQ Barrel with Pinned FSBMagpul MOE M-LOK Mid-Length HandguardAR15 A2 Birdcage Flash HiderAR15 Assembled Upper ReceiverAR15 Gen 2 ...$902.99
- Out Of StockCMMG Resolute Mk4 5.56x45mm Nato 16.1in Armor Black Rifle (55AC780-AB)When it comes to dimensions and the caliber, this is what comes to most peoples minds when you say AR15. This CMMG RESOLUTE comes chambered in 5.56x45mm, one of the most prolific calibers in the ...$1,238.28
- Out Of StockRAPTOR DEFENSE RD-15 5.56 NATO 16in 30rd Mid-Length Black Semi-Auto Rifle With LPVO Scope (RD12560)Aircraft-grade T6 aluminum receivers for added strengthNitride-treated barrel for enhanced durability and protectionStandard A2 flash hider for flash suppressionChambered in 5.56 NATO, compatible ...$749.00
- Out Of StockSIG SAUER M400 Tread V2 TacPac 5.56mm 16in 30rd Black Rifle w/ Romeo MSR (RM400-16B-TRD-V2-TACPAC)Features a free-floating M-LOK enhanced handguardChambered in 5.56 NATOExtreme durability and corrosion resistanceHas a mid-length gas system offering smoother operation and reduced recoil The ...$1,179.99
- Out Of StockIWI Zion-15 5.56mm NATO 16in 30rd Urban Camo Semi-Automatic Rifle (Z15TAC16UBDU)16in 4150 Chrome Moly Vanadium Barrel1:8 Twist RateDirect Impingement Operating SystemAdjustable B5 Stock The IWI Zion-15 5.56mm NATO Semi-Automatic Rifle is a premier semi-auto rifle chambered ...$1,019.99
- Out Of StockSAVAGE 110 Magpul Scout 5.56 NATO 16.5in 10rd RH Black Bolt-Action Rifle (58171)16 1/2-inch matte-black button-rifled barrelMuzzle brake and adjustable iron sightsIntegrated and removable rear peep sightAdjustable front sight post for elevationUtilizes standard AR-15 style ...$874.99
- Out Of StockAERO PRECISION M4E1 Pro 5.56mm NATO 16in 30rd Kodiak Brown Semi-Auto Rifle (APCR640451)M4E1 PRO Lower Receiver - Kodiak Brown AnodizedM4E1 Threaded Upper Receiver - Kodiak Brown Anodized15" MOD 4 Handguard - Kodiak Brown Anodized16" Cold Hammer Forged BA Gov 5.56 Barrel - ...18% off$1,478.99$1,799.99
- Out Of StockDIAMONDBACK DB15 AR 223 Rem/556NATO 16in 30rd Semi-Auto Rifle (DB171AK001)223 Remington/ 5.56 NATO16" Barrel15" Handguard30 Round Magazine Diamondback Firearms is proud to announce its NEW line of DB15 rifles made entirely in the USA! Starting with the ...$623.00
- Out Of StockDIAMONDBACK DB15 AR 556 Nato 16in 30rd Semi-Auto Rifle (DBF1717K171)Finish: Tiger Stripe Camo CerakoteCaliber: 5.56 NATOBarrel: Diamondback Barrels 5.56, 16", Medium, 4150 CrMov, Black Nitride, 1:8 RHGas System: Carbine-LengthBCG: Shot-Peened, Magnetic ...$718.00
- Out Of StockSMITH & WESSON Volunteer XV Pro M-LOK 5.56 NATO / 223 Remington 16in 30rd Semi-Auto Rifle (13515)PWS 556 muzzle breakFlat-faced trigger15 M-LOK Free Float RailB5 Systems P-Grip Type 23B5 Systems Enhanced SOPMOD stock with QD attachmentAmbidextrous Radian Raptor-LT charging handle1:8 Twist 5R ...$1,342.99
- Out Of StockSpike's Tactical Midlength 223 Remington/556 NATO 16in Semi-Auto Rifle (STR5735-CM3F-PSTW)16" BarrelMid Length Gas System13" M-LOK RailStorm Trooper White CerakoteNo Magazine Included Spike's complete rifles are built to strict standards, inspected by their professionally ...$912.99
- Out Of StockAMERICAN DEFENSE MFG UIC MOD-1 5.56NATO 13.9in 30rd AR Rifle (UICR5BLK13M1MLOK)Fully ambidextrous controlsEnlarged bolt catchRight side bolt catch and release leverLeft side magazine releaseCompetition style mag wellADM ACT triggerMagpul MOE Grip and MOE-SL StockADM 10 ...$1,407.00
- Out Of StockAERO PRECISION M4E1 Pro 16in 5.56mm 30rd Black Semi-Automatic Rifle (APCR640449)16in Cold Hammer Forged BarrelMid Length Gas SystemPined Low Profile Gas BlockAR15 A2 Birdcage Flash HiderEZ Install Takedown / Pivot PinsALG QMS Single Stage TriggerAero Precision Enhanced Buffer ...$1,799.99
- Out Of StockBERSA BAR15R MFT 223 Remington/556NATO 16in 30rd Semi-Auto AR Rifle (BAR15RMFT)Milspec16" BarrelMFT MagazineMFT StockMFT Grip Bersa's entry into the AR15 market comes in strong, with an attractive price and quality upgrades out of the box. Features MFT furniture set ...$646.99
- Out Of StockSMITH & WESSON M&P 15 Sport III 5.56 NATO 16in With CT Red Dot Optic 30rd Black Rifle (14207)5.56x45mm NATO caliber16" barrel with a 1:8" twist 5R rifled barrel5R rifling profile has consistent contact with the projectile, ensuring a more accurate rifleThe 1:8 twist rate allows ...$729.00
- Out Of StockCMMG Dissent Br4 5.56 16.1in 10rd Coyote Tan Rifle (55A520B-CT)16.1" barrel chambered in 5.56x45mm for extended range and huntingIdeal for use in 2A unfriendly states with modern engineeringCombines traditional controls and ergonomics for versatile ...$1,628.76
- Out Of StockCMMG Dissent Br4 5.56mm NATO 14.5in 10rd Coyote Tan Semi-Auto Rifle (55A080B-CT)14.5in 4140 Chrome Moly BarrelDISSENT 7075 T6 Aluminum Upper ReceiverBr4 Billet 7075 T6 Aluminum Lower ReceiverCMMG 15" Proprietary HandguardZEROED Drop-In Single Stage TriggerReversible ...$1,691.99
- Out Of StockSIG SAUER MCX SBR 5.56 NATO 11.5in 30rd Semi-Auto Rifle (RMCX-556N-11B-IR-SBR)Lightened handguard for improved maneuverabilityErgonomic design for comfortable grip and controlEnhanced accuracy with advanced barrel technologyImproved trigger system for consistent ...$2,499.99
Carrying the honor of being the new standard NATO rifle cartridge, 5.56 x 45 became one of the most popular rifle calibers on the market. It was developed on the base of the .223 Remington cartridge and even though the two are not entirely identical, they have similar dimensions. 5.56 rifles have less maneuverability than corresponding handguns, but the former are more numerous. Combining high velocity and magazine capacity with a small size and lightweight design, the 5.56 cartridge became a people’s champion for a reason.
Even though these two calibers carry different names, their story is closely intertwined. It all began with the development of the .223 Remington cartridge that was launched together with the development of a whole new lightweight combat rifle. U.S. Continental Army Command initiated the project to find an alternative to 7.62x51 rifles. Several famous gun makers were invited to participate, including Fairchild Industries, Remington Arms, and Winchester Arms. After two years of development, a .223 Remington cartridge (former .222 Special) was established. In 1963, it was officially accepted and named "Cartridge, 5.56mm ball, M193." In some seven years, NATO members decided to choose another standard caliber, a smaller one, that would replace 7.62x51mm. .223 Remington was chosen as a base for the future cartridge, and, with several changes, it turned into a 5.56 x 45mm cartridge. It had an unconditional advantage of light weight, allowing the soldiers to carry more ammunition for the same weight, in addition to high-velocity and small size.
Gritr Sports has many models of 5.56 assault rifles for sale. We sell firearms that bear the mark of quality of the most well-known gun makers. Here you can find 5.56 NATO guns, produced by such brands as Daniel Defense, Diamondback, Springfield Armory, Windham Weaponry, Black Rain Ordnance, Smith & Wesson, and several others. The variety is what we take pride in, so you will definitely find something to your liking.