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Home > Shop by Department > RIFLES > SEMI-AUTO RIFLES > SEMI-AUTO 5.56 NATO/.223 REM RIFLES

5.56 Rifles for Sale Online

When customization, accuracy, and power are the top priorities, 5.56 guns have you covered. 5.56mm rifles were designed to use high velocity, powerful 5.56 millimeter rounds, which has made them a favorite among the U.S. military and NATO forces. For shooters who prefer .223 caliber rounds, many of the 5.56 rifles sold by DeGuns.net fire those as well. These 5.56/.223 rifles may not be quite as powerful as AK47s, but they are known for their extreme accuracy.

But the versatility doesn’t stop there. 556 guns can be configured into a one-of-a-kind firearm that’s outfitted to your exact needs and specifications. Choose one our 556 rifles and then have fun customizing it into your 556 rifle with a variety of:

5.56mm rifles are ideal in situations where having to reload could be a serious hindrance. That’s why it’s the semi-automatic of choice for gun enthusiasts who need a firearm for hunting, home defense, sport shooting and more.

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Adams Arms Agency 5.56 NATO/.223 Rem 16" Free-Float Piston Driven AR-15 Style Rifle FGAA00115A 812151021342 Adams Arms Agency 5.56 NATO/.223 Rem 16" Free-Float Piston Driven AR-15 Style Rifle
Our Price: $994.00
Sale Price: $588.99
Savings: $405.01
153 in stock!
Smith and Wesson M&P15 Sport II Optics Ready 5.56 NATO/.223 Rem 16" AR-15 Rifle 10159 022188866421 Smith and Wesson M&P15 Sport II Optics Ready 5.56 NATO/.223 Rem 16" AR-15 Rifle
Our Price: $719.00
Sale Price: $469.99
Savings: $249.01
133 in stock!
Sig Sauer RM400 SRP 5.56 NATO/.223 Rem 16" Optics Ready Semi-Auto AR-15 Rifle RM400-16B-C-SRP 798681436897 Sig Sauer RM400 SRP 5.56 NATO/.223 Rem 16" Optics Ready Semi-Auto AR-15 Rifle
Our Price: $1,054.00
Deal of the Day Price: $769.99
Savings: $284.01
92 in stock!
Sig Sauer M400 Enhanced Carbine 5.56 NATO/.223 Rem 16" 30+1 AR-15 Rifle RM400-16B-ECP 798681476817 Sig Sauer M400 Enhanced Carbine 5.56 NATO/.223 Rem 16" 30+1 AR-15 Rifle
Our Price: $1,413.00
Sale Price: $999.99
Savings: $413.01
65 in stock!
DPMS Panther Oracle 223 5.56 Flat Top Optic Ready 16" Carbine AR 15 AR-15 DPMS Panther Oracle 5.56 NATO/.223 Rem 16" AR-15 Semi-Auto Rifle
Our Price: $649.99
Sale Price: $447.99
Savings: $202.00
57 in stock!
Daniel Defense M4 Carbine V7 LW 5.56 AR15 02-128-02241-047, 815604018487 Daniel Defense M4 Carbine V7 LW 5.56 AR15 02-128-02241-047
Our Price: $1,679.00
Sale Price: $1,595.00
Savings: $84.00
44 in stock!
Sig Sauer Sig516 Patrol 5.56 NATO/.223 Rem 16" Piston-Driven AR-15 Rifle FDE Finish R516G2-16B-P-FDE 798681441440 Sig Sauer Sig516 Patrol 5.56 NATO/.223 Rem 16" Piston-Driven AR-15 Rifle FDE Finish
Our Price: $1,848.00
Sale Price: $1,299.99
Savings: $548.01
40 in stock!
Smith & Wesson, S&W Model M&P 15 Sport II with Forward Assist & Dust Cover 5.56mm 16" Barrel 10202 022188868104 Smith & Wesson, S&W Model M&P 15 Sport II with Forward Assist & Dust Cover 5.56mm 16" Barrel
Our Price: $739.00
Sale Price: $499.99
Savings: $239.01
35 in stock!
CZ-USA CZ 805 Bren S1 .223 Rem/5.56 NATO Carbine Black 08520 806703085203 CZ-USA 08520 CZ 805 Bren S1 .223 Rem/5.56 NATO Carbine - Black
Our Price: $1,999.00
Sale Price: $1,599.99
Savings: $399.01
27 in stock!
Sig Sauer M400 5.56 NATO AR-15 16" Rifle with Romeo5 Red Dot Sight and FDE Magpul Grip, Stock, Handguard RM400-16B-ECP-R5 Sig Sauer M400 5.56 NATO AR-15 16" Rifle with Romeo5 Red Dot Sight and FDE Magpul Grip, Stock, Handguard
Our Price: $1,299.99
Deal of the Day Price: $899.99
Savings: $400.00
24 in stock!
Sig Sauer M400  Enhanced Carbine RM400-16B-ECP 5.56 AR 15 RM400-16B-ECP-R4B 798681553426 SIG M400 Combo 556 16" MOE R4B 30 Round with Romeo 4B Red Dot
Our Price: $1,499.00
Sale Price: $1,024.99
Savings: $474.01
20 in stock!
Daniel Defense DDM4 V7 MILSPEC+ 5.56 AR15 02-128-02338-047 815604018562 Daniel Defense DDM4 V7 MILSPEC+ 5.56 NATO AR-15 02-128-02338-047
Our Price: $1,847.00
Sale Price: $1,755.00
Savings: $92.00
19 in stock!
IWI Tavor X95 Flattop XB16 5.56 NATO/.223 Rem 16.5" Bullpup Semi-Auto Rifle IWXB16 859735005916 IWI Tavor X95 Flattop XB16 5.56 NATO/.223 Rem 16.5" Bullpup Semi-Auto Rifle
Our Price: $1,999.00
Sale Price: $1,629.99
Savings: $369.01
15 in stock!
Daniel Defense DDM4 V5 5.56x45mm NATO/.223 Rem AR-15 Style Rifle 02-123-16029-047 815604015509 Daniel Defense DDM4 V5 5.56x45mm NATO/.223 Rem AR-15 Style Rifle
Our Price: $1,773.00
Sale Price: $1,685.00
Savings: $88.00
14 in stock!
Daniel Defense DDM4V7 5.56 NATO/.223 Rem 30+1 16" 30+1 Rifle 02-128-02081-047 815604018456 Daniel Defense DDM4V7 5.56 NATO/.223 Rem 30+1 16" 30+1 Rifle
Our Price: $1,679.00
Sale Price: $1,595.00
Savings: $84.00
12 in stock!
Smith & Wesson M&P-15X 5.56mm Semi-Auto Rifle with Troy Short Quad and Battle Sights (LE Only) 311008 022188136050 Smith & Wesson M&P-15X 5.56mm Semi-Auto Rifle with Troy Short Quad and Battle Sights (LEO Only)
Our Price: $989.50
Sale Price: $899.99
Savings: $89.51
10 in stock!
Molot Veper Pioneer .223 Rem 21.6" 10+1 Semi-Auto AK Style Rifle VPRP-223-01 Molot Vepr Pioneer .223 Rem 21.6" 10+1 Semi-Auto AK Style Rifle
Our Price: $899.99
Sale Price: $799.99
Savings: $100.00
9 in stock!
SIG SAUER 516 PATROL AR 15 5.56 R516G2-16B-P 798681441426 SIG SAUER 516 PATROL AR 15 5.56
Our Price: $1,888.00
Sale Price: $1,599.99
Savings: $288.01
8 in stock!
Ruger AR-556 5.56 NATO/.223 Remington AR-15 Style Rifle 8500 736676085002 Ruger AR-556 5.56 NATO/.223 Remington AR-15 Style Rifle
Our Price: $649.99
Sale Price: $499.99
Savings: $150.00
7 in stock!
Christensen Arms CA-15 VTac .223 Wylde 16" 30+1 AR-15 Rifle CA10275-112521 Christensen Arms CA-15 VTac .223 Wylde 16" 30+1 AR-15 Rifle
Our Price: $2,999.99
Sale Price: $2,299.99
Savings: $700.00
7 in stock!
DPMS Panther Oracle 223 5.56 Flat Top Optic Ready 16" Carbine AR 15 AR-15 DPMS Panther Oracle 5.56 NATO/.223 Rem 16" AR-15 Semi-Auto Rifle 10 Round
Our Price: $649.99
Sale Price: $496.99
Savings: $153.00
7 in stock!
FN FN-15 FN36318 MILITARY COLLECTOR M4 5.56MM MILITARY COLLECTOR M16 223 Rem | 5.56 NATO FN36318 845737006211 FN FN-15 FN36318 MILITARY COLLECTOR M4 5.56MM MILITARY COLLECTOR M16 223 Rem | 5.56 NATO
Our Price: $1,749.00
Sale Price: $1,599.99
Savings: $149.01
7 in stock!
Daniel Defense DDM4V7 Pro 5.56 NATO/.223 Rem 30+1 18" 30+1 Rifle 02-128-16541-047 815604019248 Daniel Defense DDM4V7 Pro 5.56 NATO/.223 Rem 30+1 18" 30+1 Rifle
Our Price: $1,941.00
Sale Price: $1,844.00
Savings: $97.00
7 in stock!
POF USA P415 Gen4 Piston Operated AR-15 5.56 NATO/.223 Rem Rifle 16.5" Barrel Length 00720 847313007209 POF USA P415 Edge Gen4 Piston Operated AR-15 5.56 NATO/.223 Rem Rifle 16.5" Barrel Length 01143
Our Price: $1,999.99
Sale Price: $1,599.99
Savings: $400.00
7 in stock!
Daniel Defense MK12 AR-15 SPR 5.56 NATO/.223 Rem 18" Rifle 02-142-13175-047 815604015318 Daniel Defense MK12 AR-15 SPR 5.56 NATO/.223 Rem 18" Rifle
Our Price: $2,099.00
Sale Price: $1,994.00
Savings: $105.00
6 in stock!
Molot VEPR .223 Rem 21.6" Semi-Auto 10+1 Rifle VPRS-223-01 Molot VEPR .223 Rem 21.6" Semi-Auto 10+1 Rifle
Our Price: $822.99
Sale Price: $799.99
Savings: $23.00
6 in stock!
Daniel Defense DDM4V7 5.56 NATO/.223 Rem 30+1 16" 30+1 Rifle 02-128-130421-047 815604019538 Daniel Defense DDM4V7 Tornado 5.56 NATO/.223 Rem 30+1 16" 30+1 Rifle
Our Price: $1,679.00
Sale Price: $1,595.00
Savings: $84.00
6 in stock!
Daniel Defense DDM4 V11 LW M4 Carbine 5.56 Rifle 02-151-30032-047 815604016186, Daniel Defense DDM4V11LW M4 Carbine V11 LW 5.56 NATO/.223 Rem AR-15 Style Rifle
Our Price: $1,679.00
Sale Price: $1,595.00
Savings: $84.00
4 in stock!
   
 

556 Rifles In Stock and Ready to Ship

When you order an item online, you expect it to ship quick. But what if it’s not in stock? This is a common problem for gun owners today. While other suppliers struggle to meet the demands of customers, DeGuns is proud to say that our inventory of 5.56 rifles is well stocked and ready to ship.

We’ll get your order and payment processed fast so your 5.56mm rifle gets shipped out quick - right to your door. If you’re interested in customizing your new gun, take a look at the accessories section for affordable add-ons that are also guaranteed to be in stock.