Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel |

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Windham Weaponry + Firearms Windham Weaponry Firearms Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel Windham Weaponry + Firearms Windham Weaponry Firearms + Rifles Windham Weaponry Rifles Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel

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Image of Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel, 1-8 Twist, 5 Rounds, R20FSSFTWS1-FRRMPG

Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel, 1-8 Twist, 5 Rounds, R20FSSFTWS1-FRRMPG

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Product Info for Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel

Windham Weaponry R20FSSFTWS1 R20 VEX Wood Stock Series 5.56x45mm NATO Caliber with 20" Barrel, 5+1 Capacity, Black Hard Coat Anodized Metal Finish, Pepper Gray Stock Black Polymer Grip Right Hand

Specifications for Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel:

Manufacturer:	Windham Weaponry
Gun Model:	Windham Weaponry R20
Gun Type:	Rifle
Caliber:	5.56x45mm NATO
Barrel Length:	20 in
Action Type:	Gas Operated Semi-Automatic
Barrel Twist Rate:	1-8
Magazine Capacity:	5 Round
Weight:	8.35 lb
Height:	3.8 in
Width:	11.5 in
Length:	49
Hand:	Right
Fabric/Material:	Aluminum

Package Contents:

Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel

What firearm models does the manufacturer say Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel is compatible with?

The manufacturer says that Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel is compatible with Windham Weaponry R20

Ammunition

1–40 / 40

PMC Ammunition X-TAC, 5.56x45mm NATO, 55 grain, Full Metal Jacket, Brass, Centerfire Rifle Ammo, 20, 556X

PMC Ammunition X-TAC, 5.56x45mm NATO, 55 grain, Full Metal Jacket, Brass, Centerfire Rifle Ammo, 20, 556X

List: $15.99 (Save 36%)

PMC Ammunition X-TAC Light Armor Piercing 5.56x45mm NATO 62 Grain Brass Cased Centerfire Rifle Ammunition

PMC Ammunition X-TAC Light Armor Piercing 5.56x45mm NATO 62 Grain Brass Cased Centerfire Rifle Ammunition

As Low As (Save Up to 31%)

See all 2 models

Winchester Super Match

Winchester Super Match

As Low As (Save Up to 15%)

$0.41 - $2.57/Round

See all 20 models

Hornady BLACK 5.56x45mm NATO 75 Grain InterLock HD SBR Centerfire Rifle Ammunition

Hornady BLACK 5.56x45mm NATO 75 Grain InterLock HD SBR Centerfire Rifle Ammunition

As Low As (Save Up to 14%)

See all 2 models

Barnes Vor-TxRifle Cartridges, 5.56x45mm NATO, TSX Boat Tail, 70 Grain, 20 - Rounds, *31191

Barnes Vor-TxRifle Cartridges, 5.56x45mm NATO, TSX Boat Tail, 70 Grain, 20 - Rounds, *31191

List: $43.99 (Save 10%)

Winchester USA 5.56x45mm NATO 55 grain Ball (M193) Full Metal Jacket Brass Centerfire Rifle Ammunition

Winchester USA 5.56x45mm NATO 55 grain Ball (M193) Full Metal Jacket Brass Centerfire Rifle Ammunition

As Low As (Save Up to 29%)

$0.57 - $0.78/Round

See all 6 models

Hornady Frontier 5.56x45mm NATO 68 grain Boat-Tail Hollow Point Brass Cased Centerfire Rifle Ammo, 20 Rounds, FR310

Hornady Frontier 5.56x45mm NATO 68 grain Boat-Tail Hollow Point Brass Cased Centerfire Rifle Ammo, 20 Rounds, FR310

List: $19.60 (Save 24%)

Winchester USA 5.56x45mm NATO 62 grain Green Tip M855 Full Metal Jacket Boat Tail FMJBT Brass Centerfire Rifle Ammunition

Winchester USA 5.56x45mm NATO 62 grain Green Tip M855 Full Metal Jacket Boat Tail FMJBT Brass Centerfire Rifle Ammunition

As Low As (Save Up to 54%)

$0.65 - $0.82/Round

See all 7 models

Freedom Munitions 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Rifle Ammunition

Freedom Munitions 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Rifle Ammunition

As Low As (Save Up to 19%)

$0.53 - $0.59/Round

See all 2 models

Hornady Frontier 5.56x45mm NATO 55 Grain Brass Cased Full Metal Jacket Rifle Ammo, 250 Rounds, FR604

Hornady Frontier 5.56x45mm NATO 55 Grain Brass Cased Full Metal Jacket Rifle Ammo, 250 Rounds, FR604

List: $204.99 (Save 30%)

PMC 556M55BP Battle Pack 5.56 NATO 62 Gr Light Armor Piercing LAP

PMC 556M55BP Battle Pack 5.56 NATO 62 Gr Light Armor Piercing LAP

List: $89.00 (Save 20%)

Federal American Eagle 5.56x45mm NATO 55 Grain Full Metal Jacket Boat Tail Brass Cased Rifle Ammunition

Federal American Eagle 5.56x45mm NATO 55 Grain Full Metal Jacket Boat Tail Brass Cased Rifle Ammunition

As Low As (Save Up to 25%)

$0.67 - $0.81/Round

See all 2 models

First Breach 5.56 NATO 55 Grain Full Metal Jacket Boattail New C220 Brass Cased Rifle Ammo, 1000 Rounds, 50009

First Breach 5.56 NATO 55 Grain Full Metal Jacket Boattail New C220 Brass Cased Rifle Ammo, 1000 Rounds, 50009

List: $599.99 (Save 20%)

Atomic Ammunition Cycling Defense AD77 5.56x45mm NATO 77 grain Boat Tail Hollow Point Brass Cased Rifle Ammunition

Atomic Ammunition Cycling Defense AD77 5.56x45mm NATO 77 grain Boat Tail Hollow Point Brass Cased Rifle Ammunition

As Low As (Save Up to $13.01)

$1.47 - $1.54/Round

See all 2 models

Hornady Frontier 5.56x45mm NATO 55 Grain Hollow Point Centerfire Rifle Ammunition

Hornady Frontier 5.56x45mm NATO 55 Grain Hollow Point Centerfire Rifle Ammunition

As Low As (Save Up to 27%)

$0.62 - $0.69/Round

See all 3 models

Hornady Frontier 5.56x45mm NATO 62 Grain Full Metal Jacket Centerfire Rifle Ammunition

Hornady Frontier 5.56x45mm NATO 62 Grain Full Metal Jacket Centerfire Rifle Ammunition

As Low As (Save Up to 18%)

See all 2 models

Hornady Frontier 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Rifle Ammunition

Hornady Frontier 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Rifle Ammunition

As Low As (Save Up to 17%)

$0.65 - $0.69/Round

See all 3 models

Barnes Vor-TxRifle Cartridges, 5.56x45mm NATO, TSX Boat Tail, 62 Grain, 20 - Rounds, *31190

Barnes Vor-TxRifle Cartridges, 5.56x45mm NATO, TSX Boat Tail, 62 Grain, 20 - Rounds, *31190

List: $70.88 (Save 39%)

Hornady BLACK 5.56x45mm NATO 62 grain Full Metal Jacket Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81263

Hornady BLACK 5.56x45mm NATO 62 grain Full Metal Jacket Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81263

List: $24.99 (Save 25%)

Hornady Superformance 5.56x45mm NATO 75 grain Boat-Tail Hollow Point Match Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81264

Hornady Superformance 5.56x45mm NATO 75 grain Boat-Tail Hollow Point Match Brass Cased Centerfire Rifle Ammo, 20 Rounds, 81264

List: $41.40 (Save $3.91)

PMC 556XBP Battle Pack 5.56 NATO 55 Gr Full Metal Jacket Boat Tail FMJBT

PMC 556XBP Battle Pack 5.56 NATO 55 Gr Full Metal Jacket Boat Tail FMJBT

List: $140.00 (Save $12.51)

PMC Ammunition X-Tac 5.56x45mm NATO 55 Grain Full Metal Jacket Rifle Ammo, Metal Box, 840 Rounds, 1102741

PMC Ammunition X-Tac 5.56x45mm NATO 55 Grain Full Metal Jacket Rifle Ammo, Metal Box, 840 Rounds, 1102741

List: $632.49 (Save 10%)

AmmoDyn 5.56x45mm NATO 55 grain Full Metal Jacket Brass Cased Rifle Ammo, 30 Rounds, PM-55655-30

AmmoDyn 5.56x45mm NATO 55 grain Full Metal Jacket Brass Cased Rifle Ammo, 30 Rounds, PM-55655-30

List: $26.95 (Save 18%)

Prvi Partizan RangeMaster, 5.56 NATO, 55 Grain, Full Metal Jacket, 20 Round Box PPRM5561

Prvi Partizan RangeMaster, 5.56 NATO, 55 Grain, Full Metal Jacket, 20 Round Box PPRM5561

List: $31.47 (Save 60%)

Fort Scott Munitions, 5.56x45mm NATO, 55 grain, Copper Solid, Brass, Centerfire Rifle Ammo, 20, 556-055-SCV

Fort Scott Munitions, 5.56x45mm NATO, 55 grain, Copper Solid, Brass, Centerfire Rifle Ammo, 20, 556-055-SCV

List: $28.32 (Save 12%)

Hornady Superfomance 5.56 Nato 55 Grain Copper Solid CX Brass Cased Centerfire Rifle Ammo, 20 Rounds, 812544

Hornady Superfomance 5.56 Nato 55 Grain Copper Solid CX Brass Cased Centerfire Rifle Ammo, 20 Rounds, 812544

List: $46.61 (Save 30%)

Norma Range and Training 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Cased Rifle Ammo, 20 Rounds, 701701313

Norma Range and Training 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Cased Rifle Ammo, 20 Rounds, 701701313

Barnes Precision 5.56x45mm NATO 85 grain Burner Open Tip Match Boat Tail Centerfire Rifle Ammo, 20 Rounds, *30848

Barnes Precision 5.56x45mm NATO 85 grain Burner Open Tip Match Boat Tail Centerfire Rifle Ammo, 20 Rounds, *30848

List: $42.99 (Save 10%)

Barnes Precision MatchRifle Cartridges, 5.56x45mm NATO, Match Burner Open Tip Match Boat Tail, 69 Grain, 20 - Rounds, *30846

Barnes Precision MatchRifle Cartridges, 5.56x45mm NATO, Match Burner Open Tip Match Boat Tail, 69 Grain, 20 - Rounds, *30846

List: $42.99 (Save 16%)

PPU PPRM5561M 5.56X45 55 FMJBT RNGMSTR

PPU PPRM5561M 5.56X45 55 FMJBT RNGMSTR

List: $866.49 (Save $59.00)

Winchester Lake City 5.56 MM M855 FMJ WIN 62 GR 50 Green Tip 50-20RD Box 1000 rds tot, WM855K Case

Winchester Lake City 5.56 MM M855 FMJ WIN 62 GR 50 Green Tip 50-20RD Box 1000 rds tot, WM855K Case

List: $869.99 (Save $80.00)

PMC Ammunition X-Tac Rifle Ammo 5.56x45mm 55 gr FMJBT 3120 fps 1000/Box, 5.56X Case

PMC Ammunition X-Tac Rifle Ammo 5.56x45mm 55 gr FMJBT 3120 fps 1000/Box, 5.56X Case

List: $689.99 (Save 10%)

Fiocchi Shooting Dynamics Rifle Ammo 5.56mm NATO 55 gr FMJ 3240 fps 1000/ct Case, 556M193LC

Fiocchi Shooting Dynamics Rifle Ammo 5.56mm NATO 55 gr FMJ 3240 fps 1000/ct Case, 556M193LC

List: $829.99 (Save 12%)

PPU 5.56x45mm NATO 0 grain Brass Cased Blank Ammo, 20 Rounds, PPB556

PPU 5.56x45mm NATO 0 grain Brass Cased Blank Ammo, 20 Rounds, PPB556

Veteran Ammo Defense 5.56x45mm NATO 62 grain Hollow Point Centerfire Brass Cased Pistol Ammo, 20 Rounds, HMBX-556-24

Veteran Ammo Defense 5.56x45mm NATO 62 grain Hollow Point Centerfire Brass Cased Pistol Ammo, 20 Rounds, HMBX-556-24

List: $49.99 (Save 23%)

Veteran Ammo Defense 5.56x45mm NATO 62 Grain Full Metal Jacket Centerfire Brass Cased Pistol Ammo, 20 Rounds, HMBX-556-25

Veteran Ammo Defense 5.56x45mm NATO 62 Grain Full Metal Jacket Centerfire Brass Cased Pistol Ammo, 20 Rounds, HMBX-556-25

List: $49.99 (Save 22%)

Hornady Frontier 5.56x45mm NATO 75 grain Boat Tail Hollow Point (BTHP) Brass Centerfire Rifle Ammunition

Hornady Frontier 5.56x45mm NATO 75 grain Boat Tail Hollow Point (BTHP) Brass Centerfire Rifle Ammunition

As Low As (Save Up to 17%)

See all 2 models

Century Arms MKE 5.56x45mm NATO 62 Grain Full Metal Jacket Brass Cased Rifle Ammo, 2250 Rounds, AM8303

Century Arms MKE 5.56x45mm NATO 62 Grain Full Metal Jacket Brass Cased Rifle Ammo, 2250 Rounds, AM8303

List: $1,500.00 (Save $57.01)

Magtech 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Cased Rifle Ammo, 1000 Rounds, 556ACS

Magtech 5.56x45mm NATO 55 Grain Full Metal Jacket Brass Cased Rifle Ammo, 1000 Rounds, 556ACS

List: $732.00 (Save $31.51)

PMC Ammunition X-Tac 5.56x45mm NATO 62 Grain Full Metal Jacket Boat Tail Rifle Ammo, Metal Box, 840 Rounds, 1102742

PMC Ammunition X-Tac 5.56x45mm NATO 62 Grain Full Metal Jacket Boat Tail Rifle Ammo, Metal Box, 840 Rounds, 1102742

List: $650.49 (Save $48.50)

Firearm Case

1–30 / 30

Pelican 1770 Long Watertight Case w/Foam and Lid, Black, 017700-0000-110

Pelican 1770 Long Watertight Case w/Foam and Lid, Black, 017700-0000-110

List: $894.95 (Save 19%)

Eberlestock Sniper Sled Drag Bag Gun Case

Eberlestock Sniper Sled Drag Bag Gun Case

See all 5 models

Ulfhednar Gun Case/Shooting Mat Combo, Cordura Material, UH041

Ulfhednar Gun Case/Shooting Mat Combo, Cordura Material, UH041

List: $598.00 (Save $38.01)

Pelican VAULT V800 Double Rifle Case, 56.11in

Pelican VAULT V800 Double Rifle Case, 56.11in

List: $279.72 (Save 18%)

See all 2 models

Pelican Storm Cases iM3200 Long Rifle Case

Pelican Storm Cases iM3200 Long Rifle Case

As Low As (Save Up to 21%)

See all 3 models

Ulfhednar Gun Case w/Backpack Straps

Ulfhednar Gun Case w/Backpack Straps

As Low As (Save Up to 13%)

See all 2 models

Pelican 1700 Protector Long Gun Case w/Foam, Black, 017000-0000-110

Pelican 1700 Protector Long Gun Case w/Foam, Black, 017000-0000-110

List: $393.95 (Save 14%)

Pelican Storm Cases iM3300 Long Hard Gun Case, 53.8in

Pelican Storm Cases iM3300 Long Hard Gun Case, 53.8in

As Low As (Save Up to 19%)

See all 3 models

Ulfhednar Gun Case w/backpack straps 140 cm, NSN N, UH040

Ulfhednar Gun Case w/backpack straps 140 cm, NSN N, UH040

List: $508.00 (Save 19%)

Eberlestock E2B Sniper Sled Drag Bag - 57in Long, Black

Eberlestock E2B Sniper Sled Drag Bag - 57in Long, Black

See all 3 models

Pelican Storm Cases iM3100 Long Hard Gun Case, 39.8in

Pelican Storm Cases iM3100 Long Hard Gun Case, 39.8in

As Low As (Save Up to 14%)

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Pelican VAULT V700 Case, Takedown Firearms, 39.61in, Black, VCV700-0000-BLK

Pelican VAULT V700 Case, Takedown Firearms, 39.61in, Black, VCV700-0000-BLK

List: $210.99 (Save 19%)

Evolution Outdoor President Series Case

Evolution Outdoor President Series Case

As Low As (Save Up to 10%)

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Voodoo Tactical Double Sided Deluxe Padded Weapons Case, 42in, Black, 42in, 15-7618001000

Voodoo Tactical Double Sided Deluxe Padded Weapons Case, 42in, Black, 42in, 15-7618001000

List: $299.95 (Save 15%)

Pelican Vault V730 Tactical Rifle Case wl/wf, 47.1in

Pelican Vault V730 Tactical Rifle Case wl/wf, 47.1in

List: $257.99 (Save Up to 20%)

See all 2 models

Free 2 Day Shipping

Boyt Harness Rifle Case

Boyt Harness Rifle Case

As Low As (Save Up to 38%)

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MTM Tactical 39in Rifle Crate, Dark Earth, TRC39

MTM Tactical 39in Rifle Crate, Dark Earth, TRC39

Eylar Extra Large 53in Waterproof Roller Hard Rifle Case w/Foam

Eylar Extra Large 53in Waterproof Roller Hard Rifle Case w/Foam

As Low As (Save 44%)

See all 6 models

Boyt Harness Deluxe Plantation Series Rifle Case, Taupe, 48in, 25135

Boyt Harness Deluxe Plantation Series Rifle Case, Taupe, 48in, 25135

List: $155.00 (Save 30%)

Armageddon Gear Precision Rifle Case

Armageddon Gear Precision Rifle Case

As Low As (Save Up to $4.36)

See all 9 models

Magpul DAKA Hard Gun Case LR53

Magpul DAKA Hard Gun Case LR53

As Low As (Save Up to $29.05)

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Boyt Harness H36SG Single Takedown/Tactical Black, Interior 36.5in. x 13.5in. x 4in., 42104, Black, 42104

Boyt Harness H36SG Single Takedown/Tactical Black, Interior 36.5in. x 13.5in. x 4in., 42104, Black, 42104

List: $162.00 (Save 18%)

Galati Gear 35in. Riot Gun Case 105819

Galati Gear 35in. Riot Gun Case 105819

List: $98.95 (Save 26%)

ODIN Works Gear Ready Bag

ODIN Works Gear Ready Bag

As Low As (Save Up to 16%)

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Magpul Industries DAKA Grid Organizer for Pelican Vault

Magpul Industries DAKA Grid Organizer for Pelican Vault

As Low As (Save Up to 11%)

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Pelican V800, Vault Double Rifle Case, With Foam, Olive Drab Green, 56.11"x 19.15"x 6.65" VCV800-0000-ODG

Pelican V800, Vault Double Rifle Case, With Foam, Olive Drab Green, 56.11"x 19.15"x 6.65" VCV800-0000-ODG

List: $255.99 (Save 10%)

M&P Pro Tac Gun Case, 42in, 110025

M&P Pro Tac Gun Case, 42in, 110025

List: $119.99 (Save 25%)

Flambeau 513SN Double Coverage Black Polymer 5 Scoped Rifle Or Shotgun

Flambeau 513SN Double Coverage Black Polymer 5 Scoped Rifle Or Shotgun

List: $131.99 (Save $8.00)

Boyt Harness Varmin Riflecases with Pocket, OD Green, 48in, 0GC43P489

Boyt Harness Varmin Riflecases with Pocket, OD Green, 48in, 0GC43P489

List: $145.00 (Save 17%)

Boyt Harness H41XD Tactical Rifle/Carbine Case, 41in, Black, 40149

Boyt Harness H41XD Tactical Rifle/Carbine Case, 41in, Black, 40149

List: $253.00 (Save 22%)

Ammo Boxes

1–6 / 6

Berrys 29682 405 Ammo Box 223 Rem,5.56x45mm NATO 50rd Smoke Lid W/Black Bottom

Berrys 29682 405 Ammo Box 223 Rem,5.56x45mm NATO 50rd Smoke Lid W/Black Bottom

List: $6.99 (Save 50%)

Berrys 44661 405 Ammo Box 223 Rem,5.56x45mm NATO 50rd Blue Lid W/Black Bottom

Berrys 44661 405 Ammo Box 223 Rem,5.56x45mm NATO 50rd Blue Lid W/Black Bottom

List: $6.99 (Save 50%)

Berrys 79462 405 Ammo Box 223 Rem,5.56x45mm NATO 50rd Clear Lid W/Black Bottom

Berrys 79462 405 Ammo Box 223 Rem,5.56x45mm NATO 50rd Clear Lid W/Black Bottom

List: $6.99 (Save 50%)

Berrys 86410 005 Ammo Box 223 Rem,5.56x45mm NATO 100rd Blue Lid W/Black Bottom

Berrys 86410 005 Ammo Box 223 Rem,5.56x45mm NATO 100rd Blue Lid W/Black Bottom

List: $6.99 (Save 21%)

Berrys 11664 005 Ammo Box 223 Rem,5.56x45mm NATO 100rd Smoke Lid W/Black Bottom

Berrys 11664 005 Ammo Box 223 Rem,5.56x45mm NATO 100rd Smoke Lid W/Black Bottom

List: $6.99 (Save 21%)

MTM Ammo Rack w 4 RS-50-24 Ammo boxes, Dark Earth/Clear Blue, ARRS

MTM Ammo Rack w 4 RS-50-24 Ammo boxes, Dark Earth/Clear Blue, ARRS

Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel Unavailable & Discontinued Models

List of Unorderable Models

Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel, 1-8 Twist, 5 Rounds, R20FSSFTWS1-FRRMPG , MPN: R20FSSFTWS1-FRRMPG , Code: WIN-FR1-CTRT369-R20FSSFTWS1-FRRMPG

Compare (0)

Windham Weaponry + Firearms Windham Weaponry Firearms Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel Windham Weaponry + Firearms Windham Weaponry Firearms + Rifles Windham Weaponry Rifles Windham Weaponry R20 Semi-Auto Rifle, 5.56x45mm NATO, 20 in barrel

Last updated 2026-10-08 UTC.