
5.56x45 Rifles
- In StockAMERICAN TACTICAL IMPORTS Alpha Maxx Ria 5.56x45mm 16in 60rd Semi-Automatic Rifle (ATIGAX5569ML60)Action: Semi-AutomaticCaliber: 5.56x45mm NATOCapacity: 60 RoundsBarrel: 16" Pencil Style 4150 CrMoV PhosphateTwist Rate: 1:8Stock: M4 StyleSights: Polymer Flip UpRail: 9-inch Polymer M-Lok ...5% off$399.99$419.00
- In StockRADICAL FIREARMS 5.56 NATO 16in 30rd Rifle with 15in RPR (FR16-5.56SOC-15RPR)16" 41V50 chrome moly vanadium steel SOCOM barrelChambered in 5.56 NATO with a 1:7 twist rateM16 cut bolt carrier group with Melonite finishBCG high pressure tested and magnetic particle ...40% off$449.99$749.00★★★★★1 review(s)
- In StockDIAMONDBACK DB15 5.56x45mm NATO 16in 30rd Flat Dark Earth Semi-Automatic Rifle (DB175AK221)16" 4150 Chrome Moly Steel Barrel with a 1:8" Twist1/2x28 Threaded MuzzleA2 Flash HiderA2 Front Sight BlockMil-Spec Charging HandleFree Float M-lok Compatible Hand GuardMagpul Pistol ...$544.99
- In StockRADICAL FIREARMS Socom 5.56mm 16in 30rd OD Green Semi-Automatic Rifle (FR16-5.56SOC-15RPR-ODG)16in 4140 Chrome Moly Vanadium BarrelA2 Flash HiderForged 7075 T6 Upper and Lower ReceiverFree Float Handguard6 Postion StockB5 Type 23 Pistol Grip The RADICAL FIREARMS Socom 5.56mm ...$457.99★★★★★1 review(s)
- In StockRADICAL FIREARMS RF-15 Socom 5.56 NATO 16in 30rd Flat Dark Earth Rifle (FR16-5.56SOC-15RPR-FDE)MIL-STD upper and lower receivers15" RPR free float rail system for increased accuracy and cool handlingAmple space for accessoriesReliable performance for both new and experienced shooters ...$437.99
- In StockRUGER AR-556 5.56 NATO 18in 30rd Semi-Automatic Rifle (8514)Lower receiver is fitted with Magpul MOE grip and MOE SL collapsible buttstock on the Mil-Spec buffer tubeHandguard is free-floating for accuracy and the slim, 15" length provides enhanced ...$830.99
- In StockATI AR-15 MilSport RIA P3P 5.56mm NATO 16in 30rd Semi-Automatic Rifle (ATIG15MS556MLP3P)16" Threaded Barrel1:8" Twist RateA2 Flash HiderForged Aluminum Upper/Lower ReceiversFlat Top Optics Ready UpperNano Composite Lower Parts Kit10" M-LOK Free Float Aluminum Hand ...$482.99
- In StockDANIEL DEFENSE DD4 RIII 5.56x45 NATO 16in 10rd Semi-Auto Rifle (02-191-03270-055)Fully ambidextrous controlsLightweight 12.5" RIS III rail with multiple M-LOK attachment pointsFull-length flattop picatinny railMid-length gas systemCalifornia Compliant Model Daniel ...11% off$2,173.99$2,430.00
- In StockCOLT'S MANUFACTURING M4 Magpul 5.56mm NATO 16.1in 30rd Semi-Automatic Rifle (CR6920MPS-FDE)16.1in Barrel1:7 Barrel TwistA2 Flash Hider1/2x28 Thread PitchFixed Front Sight PostFolding Rear SightForged Lower ReceiverMil Spec TriggerMagpul Foregrip6 Position Buffer Tube The COLT'S ...$1,124.99
- In StockRUGER Mini-14 5.56mm 18.5in 20rd Semi-Automatic Rifle (5816)Includes Picatinny Rail/Scope Rings/2 Mags, 20Rd The RUGER MINI-14/20 Rifle, 223 Rem, 18.5in Barrel, Blued (5816) is the choice for applications ranging from the farm and ranch, to the deep ...$987.99
- In StockAMERICAN TACTICAL IMPORTS AR15 Milsport Ria P3P 5.56 16in 30rd Black Rifle with 13in KeyMod Rail (ATIG15MS556P3P13)AR-15 Semi Automatic Rifle5.56 NATO/223 Rem. CaliberForged Aluminum Lower/Upper Receiver16in. M4 Profile Barrel with a 1:8" Phosphate Twist13in Keymod RailAlpha 6 Position Rear Stock30 Round ...22% offClearance$399.00$508.99
- In StockATI Mil-Sport AR-15 5.56x45mm 16in 30rd Semi-Automatic Rifle (ATIG15MS556MLTS)16" BarrelThreaded Muzzle 1/2x28 TPIFlash Hider Muzzle DeviceForged Aluminum Upper/Lower ReceiverFlat Top Optics Ready UpperFCG Aluminum Parts Kit13" Free Float Aluminum M-LOK Hand ...$537.99
- In StockDANIEL DEFENSE DDM4V7 Pro 5.56 NATO 18in 32rd Gun Metal Gray Semi-Auto Rifle (02-128-09385-047)Free-Floated Cold Hammer Forged Barrel for long term durability and superior accuracyM-LOK Attachment Points for weight reduction and optional modularityFull Length Top Rail for mounting optics of ...$2,353.00
- In StockRADICAL FIREARMS 5.56 NATO 16in 30rd B5 Bravo Stock Semi-Auto Rifle with 12in RPR (FR16-5.56SOC-12RPR)5.56x45mm NATO16" SOCOM Threaded BarrelMid Length Gas SystemA2 Flash HiderB5 Bravo StockB5 Type 23 Pistol Grip12" RPR Free Float M-LOK HandguardCarbine MIL-STD Buffer Tube30rd Magazine ...17% off$644.47$773.99
- In StockRADICAL FIREARMS RF-15 223 Remington/556NATO 16in 30rd Semi-Automatic AR Rifle (FR16-5.56SOC-15RPR-CB)Barrel Length: 16"Barrel Material: 4140 Chrome Moly VanadiumBarrel Finish: MeloniteBarrel Profile: SOCOMBarrel Thread Pitch: 1/2x28Chamber: 5.56mmTwist Rate: 1:7Barrel Extension: M4 Feed ...$439.00
- In StockIWI Tavor X95 5.56mm 16.5in 30rd Flat Dark Earth Semi-Automatic Rifle (XFD16)New fire control pack with a 5-6lb triggerForearm with picatinny rails at the 3, 6 and 9 o’clock positions with removable rail coversRelocation of the charging handle closer to your center ...$1,749.99★★★★★1 review(s)
- In StockRUGER AR-556 5.56mm 16in 30rd Mag Semi-Auto Rifle (8500)The Ruger AR-556 direct impingement Modern Sporting Rifle offers consumers an affordable, American-made with the rugged reliability you expect from Ruger.Chambered in 5.56 NATO, the AR-556’s ...$537.99★★★★★2 review(s)
- In StockKEL-TEC RDB 5.56x45mm 17in Barrel 20Rd Black Rifle (0141364)RDB bullpup designFully ambidextrous controlsComes equipped with two integral MIL-STD-1913 Picatinny railsCompatible with AR-15 style magazines17 inches BarrelIncludes a 20-round magazineFixed ...36% off$641.99$1,000.00
- In StockDANIEL DEFENSE MK18 5.56mm 10.3in Flat Dark Earth Short Barrel Rifle (02-088-17024-NFA)10.3" Cold Hammer Forged BarrelPatented Bolt-Up System attachment systemHas been rigorously tested prior to fielding by USSOCOMUnmatched in size, weight, and performanceFlat Dark Earth Finish$2,149.00
- In StockDANIEL DEFENSE DDM4 V7 SLW 5.56mm NATO 14.5in Barrel 32Rd Black Rifle (02-128-15049-047)LOWER RECEIVER: Mil-Spec with Enhanced Flared Magazine Well and Rear Receiver QD Swivel Attachment Point; CNC Machined of 7075-T6 AluminumUPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed ...17% off$1,955.00$2,345.99★★★★★1 review(s)
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.