
5.56x45 Rifles
- Out Of StockDANIEL DEFENSE DDM4 V7 5.56mm 16in 10rd Cobalt Semi-Auto AR-15 Rifle (02-128-10093-055)Chambered in the widely-used 223 Rem/5.56 NATO caliberFeatures a 16" barrel, ensuring accuracy and reliabilityThis model is compliant with strict California regulationsExcellent choice for ...$2,164.00
- Out Of StockDIAMONDBACK DB15 Black Gold 5.56 16in 10rd CA Legal Semi-Auto Rifle (DB1791K001)Made entirely in the USAU.S. Military-proven gas-impingement systemCNC-machined componentsBuilt for high performance and reliabilityAffordable, versatile platform Diamondback Firearms is proud to ...$863.63
- Out Of StockDIAMONDBACK DB15 5.56x45mm NATO 16in 30rd FDE Semi-Auto Rifle (DB175AK061)16" stainless steel barrelMid-length gas systemChambered in .223 Remington / 5.56x45mm NATOPrecision-engineered for reliability and accuracyOptimized for versatile performance Elevate your ...5% off$619.55$652.00
- Out Of StockDIAMONDBACK DB15 Combo 5.56x45mm NATO 16in 30rd FDE Semi-Auto Rifle With Additional 300 Blackout Upper Receiver (DB1721K061)16in BarrelA2 Flash Hider12in MLOK HandguardMatte FinishMagpul MOE Pistol GripMagpul Carbine StockIncludes Additional 300 Blackout Upper Receiver Diamondback Firearms DB15 rifle uses a ...$892.92
- Out Of StockDIAMONDBACK DB15 5.56x45mm NATO 16in 30rd Black/Pink Accents Semi-Auto Rifle (DB175AK591)16" 4150 CrMov steel barrelCarbine length gas systemA2 flash hider7075-T6 aluminum upper and lowerPrison Pink Cerakote finish15" aluminum free float M-LOK handguardOptics-ready Picatinny ...$566.58
- Out Of StockDIAMONDBACK DB15 5.56 16in 30rd Black Semi-Auto Rifle (DB175AK002)Gas piston operating system16" black nitride-finished 4150 chrome moly vanadium barrelForged aluminum receiver with black hard coat anodized finishPicatinny rail for optics and accessory ...6% off$582.00$616.00
- Out Of StockDIAMONDBACK DB15 5.56 16in 30rd Black/FDE Semi-Auto Rifle With Viridian Green Dot (DB175AK222)Chambered in .223 Rem/5.56 NATO16" medium 4150 chrome moly threaded barrelA2 flash hider7075-T6 aluminum receivers15" M-LOK handguardMagpul CTR stockMil-Spec triggerIncludes 30rd Magpul ...7% off$659.99$708.00
- Out Of StockDIAMONDBACK DB15 Sports South Exclusive 5.56 16in 30rd Black Semi-Auto Rifle (DB175AK003)Lightweight design at 6.6 lb16" barrel for balanced accuracy and control7075-T6 forged aluminum receiverMil-Spec triggerIntegrated flash hider for reduced muzzle signature30+1 round ...5% off$478.80$504.00
- Out Of StockDIAMONDBACK DB15 Sports South Exclusive 5.56 NATO 30rd 16in FDE Semi-Auto Rifle (DB175AK131)Carbine-length 4150 chrome moly barrelMid-length gas systemShot-peened Mil-Spec 8620 bolt carrier7075-T6 aluminum receivers15" M-LOK handguardMagpul gripMagpul carbine stockIncludes 30rd Gen ...$810.00
- Out Of StockDIAMONDBACK DB15 SBR 5.56mm 10in Black Semi-Auto (DB15)Compact SBR platform: 27.15" collapsed, 30.4" extendedSuppressor-ready with SilencerCo ASR muzzle brakeSuperlative adjustable gas blockGas-defeating charging handle5.56 NATO ...$958.80
- Out Of StockRUGER 5877 Mini-14 Ranch 5.56x45mm NATO 18.50in 5rd Semi-Auto Rifle (5877)18.5in BarrelSemi-AutomaticRear Sight: AdjustableFront Sight: Protected BladeStock: Hogue Ghillie Green The RUGER 5877 Mini-14 Ranch Rifle is a semi-automatic rifle.Simple, rugged, Garand-style ...$899.00
- Out Of StockKEL-TEC SU-16 CA Compliant 5.56x45mm NATO 16in 10rd Black/Green Semi-Auto Rifle (SU16CAGRN)Features an integrated bipod, Picatinny rail and AR-15/M-16 magazine compatibilityFront sight is integrated into the gas blockParkerized finished barrelDesigned to be in compliance with California ...$687.17
- Out Of StockGEISSELE Super Duty MOD1 5.56 NATO 14.5in 30rd DDC Semi-Auto Rifle (08-396S)Cold Hammer Forged chrome-lined barrelNanoweapon-coated Reliability Enhanced BCGHigh-Pressure Tested and MPI Bolt and BarrelSuper 42 braided buffer spring for recoil reductionSuper Compact Gas ...13% off$2,013.99$2,325.00
- Out Of StockSONS OF LIBERTY GUN WORKS Veil Solutions Tomahawk 223 Rem/5.56NATO 13.7in 3x30rd Tan AR Semi-Auto Rifle (VEILSOLUTIONSRIFLE-13-7)Stripes with VEIL Solutions Tomahawk engravedLiberty fighting triggerForward control design bolt releaseB5 systems Bravo stock and P23 grip13.7 Combat barrel (Mid-Length Gas) with pinned NOX9 ...$2,108.99
- Out Of StockCMMG Dissent Br4 5.56x45mm 16.1in 10rd Armor Black Semi-Auto Rifle (55A830B-AB)14.5in 4140CM BarrelCompact Action-Direct Impingement Operating SystemDISSENT 7075 T6 Aluminum Upper ReceiverBr4 Billet 7075 T6 Aluminum Lower ReceiverZEROED Single Stage Br4 Specific ...$1,650.77
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.