Semi-Auto Firearms

Compare semi-auto prices from top retailers. Find the best deals across all major brands.

Top Semi-Auto Brands

Sig Sauer 2,151 Glock 1,642 Springfield Armory 1,450 Smith & Wesson 1,444 Beretta 1,322 CMMG 1,320

Semi-Auto Calibers

9mm Luger 12,145 5.56x45mm NATO 5,847 12 Gauge 4,789 45 ACP 2,873 22 LR 2,634 308 Winchester 1,483

All Semi-Auto Firearms Products (40,867 results)

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Dirty Bird 16" 5.56 NATO Govt M-LOK AR-15 Complete Upper Assembly V3 - Black -

Dirty Bird 16" 5.56 NATO Govt M-LOK AR-15 Complete Upper Assembly V3 - Black

● Availability Unknown

Dirty Bird 20" M16A2 Enhanced Retro AR 15 Complete Upper -

Dirty Bird 20" M16A2 Enhanced Retro AR 15 Complete Upper

● Availability Unknown

Dirty Bird 7.5" Pistol 5.56 M-LOK AR-15 Complete Upper Assembly - OD Green -

Dirty Bird 7.5" Pistol 5.56 M-LOK AR-15 Complete Upper Assembly - OD Green

● Availability Unknown

Dirty Bird 16" Govt Mid 556 M-LOK AR-15 Complete Upper Assembly - Midnight Bronze -

Dirty Bird 16" Govt Mid 556 M-LOK AR-15 Complete Upper Assembly - Midnight Bronze

● Availability Unknown

Dirty Bird 16" Govt Mid 556 M-LOK AR-15 Complete Upper Assembly - FDE -

Dirty Bird 16" Govt Mid 556 M-LOK AR-15 Complete Upper Assembly - FDE

● Availability Unknown

Dirty Bird 16" Govt Mid 556 M-LOK AR-15 Complete Upper Assembly - Black -

Dirty Bird 16" Govt Mid 556 M-LOK AR-15 Complete Upper Assembly - Black

● Availability Unknown

16" AR 15 Complete Rifle Kit with 15" M-Lok Handguard -

16" AR 15 Complete Rifle Kit with 15" M-Lok Handguard

● Availability Unknown

16" Gov Mid M-LOK Upper Assembly - Black -

16" Gov Mid M-LOK Upper Assembly - Black

● Availability Unknown

16" 5.56 SOCOM Quad Rail AR-15 Complete Upper -

16" 5.56 SOCOM Quad Rail AR-15 Complete Upper

● Availability Unknown

One Horse 18" 6mm ARC Rifle 1:7 M-LOK Complete Upper -

One Horse 18" 6mm ARC Rifle 1:7 M-LOK Complete Upper

● Availability Unknown

Aero Precision M4E1-E 18" Rifle 6MM ARC EM15 Complete Upper - Anodized - Aero Precision

Aero Precision M4E1-E 18" Rifle 6MM ARC EM15 Complete Upper - Anodized

● Availability Unknown

16" Slick Side Billet 5.56 416R Stainless Midlength 1:7 M-LOK Complete Upper -

16" Slick Side Billet 5.56 416R Stainless Midlength 1:7 M-LOK Complete Upper

● Availability Unknown

18" Midlength 6mm ARC Medium M-LOK Upper Assembly -

18" Midlength 6mm ARC Medium M-LOK Upper Assembly

● Availability Unknown

18" Carbine 400 Legend Medium M-LOK Upper Assembly -

18" Carbine 400 Legend Medium M-LOK Upper Assembly

● Availability Unknown

10.5" 7.62x39 Medium Carbine M-LOK Upper Assembly -

10.5" 7.62x39 Medium Carbine M-LOK Upper Assembly

● Availability Unknown

16 5.56 Black Nitride Carbine M-LOK Government Upper Assembly -

16 5.56 Black Nitride Carbine M-LOK Government Upper Assembly

● Availability Unknown

20" 5.56 Phosphate Rifle M-LOK Government Upper Assembly -

20" 5.56 Phosphate Rifle M-LOK Government Upper Assembly

● Availability Unknown

16 7.62x39 Medium Carbine M-LOK Upper Assembly -

16 7.62x39 Medium Carbine M-LOK Upper Assembly

● Availability Unknown

Foxtrot Mike Products 16 Forward Charging 45 ACP AR-15 Complete Upper -

Foxtrot Mike Products 16 Forward Charging 45 ACP AR-15 Complete Upper

● Availability Unknown

Foxtrot Mike 16" Rear Charging 9mm AR-15 Complete Upper w/ 4-Port Micro Brake -

Foxtrot Mike 16" Rear Charging 9mm AR-15 Complete Upper w/ 4-Port Micro Brake

● Availability Unknown

Crosman DPMS SBR Full Auto BB Rifle - Crosman

Crosman DPMS SBR Full Auto BB Rifle

● Availability Unknown

22" .243 Winchester Lightweight Rifle M-LOK 1:8 AR-10 Stainless Slick-Side Complete Upper -

22" .243 Winchester Lightweight Rifle M-LOK 1:8 AR-10 Stainless Slick-Side Complete Upper

● Availability Unknown

16" .308 Heavy Midlength M-LOK 1:10 AR-10 Slick-Side Complete Upper -

16" .308 Heavy Midlength M-LOK 1:10 AR-10 Slick-Side Complete Upper

● Availability Unknown

11.5" 5.56 Carbine Classic Series w/ FSB AR15 Complete Upper (No Handguard) -

11.5" 5.56 Carbine Classic Series w/ FSB AR15 Complete Upper (No Handguard)

● Availability Unknown