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Glock 21 Holsters | All of the Best Brands | Safariland, DeSantis, Bianchi, Galco, BlackHawk,and More! | Free Shipping Available! — 1,120 products / 11,994 models

Keep your firearm and self safe and secure with Glock 21 Holsters! With products from Night Sights to Glock 21 Laser Sights you'll be ready to go in no time! OpticsPlanet is happy to offer free shipping on orders over $49.image

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Image of TRYBE Optics 1x21mm Micro Advanced Ruggedized Optic Red Dot Sight, RMSc Footprint TRYBE Optics 1x21mm Micro Advanced Ruggedized Optic Red Dot Sight, RMSc Footprint (11) List: $189.99 (Save 26%) $139.99 Best Rated
Image of TRYBE Defense Glock 21 Match Grade Threaded Pistol Barrel made-in-usa-flag 3 models TRYBE Defense Glock 21 Match Grade Threaded Pistol Barrel (16) As Low As (Save Up to 37%) $119.99 Blazin' Deal
Image of TRYBE Defense Glock 21 Match Grade Non-Threaded Pistol Barrel made-in-usa-flag 3 models TRYBE Defense Glock 21 Match Grade Non-Threaded Pistol Barrel (15) As Low As (Save Up to 57%) $79.99 Blazin' Deal
Image of Align Tactical Glock Thumb Rest Trigger Pin 4 models Align Tactical Glock Thumb Rest Trigger Pin (14) As Low As (Save Up to $5.99) $58.00 Best Rated
Image of LaserMax Guide Rod Laser Sight for Glocks 12 models LaserMax Guide Rod Laser Sight for Glocks (96) As Low As (Save Up to 46%) $199.02 Clearance
Image of FAB Defense Scorpus M1 Level II Retention Holster 5 models FAB Defense Scorpus M1 Level II Retention Holster (3) As Low As (Save Up to 33%) $28.80 Up to 12% Coupon
Image of Bianchi X15 Shoulder Holster 11 models Bianchi X15 Shoulder Holster (50) As Low As (Save Up to $3.01) $172.49 Blazin' Deal
Image of FAB Defense Scorpus MX Holster w/Level 2 Retention 2 models FAB Defense Scorpus MX Holster w/Level 2 Retention (1) As Low As (Save Up to 66%) $18.39 Clearance
Image of FAB Defense Scorpus M1 Level 1 Retention Holster 11 models FAB Defense Scorpus M1 Level 1 Retention Holster As Low As (Save Up to 46%) $23.40
Image of XS Sight Systems DXT2 Big Dot Night Sight - Glock 7 models XS Sight Systems DXT2 Big Dot Night Sight - Glock (21) As Low As (Save Up to 53%) $97.49 Blazin' Deal
Image of Bushnell RXC-200 1x21mm Reflex Red Dot Sights, 6 MOA Dot Reticle Bushnell RXC-200 1x21mm Reflex Red Dot Sights, 6 MOA Dot Reticle (2) List: $236.00 (Save $6.05) $229.95
Image of Galco Jackass Shoulder Rigs, Leather made-in-usa-flag 12 models Galco Jackass Shoulder Rigs, Leather (59) As Low As (Save Up to 35%) $175.99 On Sale
Image of Gould & Goodrich TELR X3000 Non-Light Bearing Belt OWB Holster 80 models Gould & Goodrich TELR X3000 Non-Light Bearing Belt OWB Holster (3) As Low As (Save Up to 60%) $46.75 Blazin' Deal
Image of Galco Parabellum 2.0 Shoulder System made-in-usa-flag Galco Parabellum 2.0 Shoulder System (1) List: $229.00 (Save 33%) $153.49
Image of Safariland 7360 7TS ALS/SLS Mid-Ride Level III Glock Duty Holster made-in-usa-flag 90 models Safariland 7360 7TS ALS/SLS Mid-Ride Level III Glock Duty Holster (7) As Low As (Save Up to 33%) $131.49 Blazin' Deal
Image of TruGlo Brite-Site Tritium Fiber Optic TFO Handgun Night Sights, Green Front & Rear made-in-usa-flag 8 models TruGlo Brite-Site Tritium Fiber Optic TFO Handgun Night Sights, Green Front & Rear (66) As Low As (Save Up to 45%) $63.36 Clearance
Image of XS Sight Systems DXT2 Standard Dot Sight Glock 3 models XS Sight Systems DXT2 Standard Dot Sight Glock As Low As (Save Up to 40%) $109.99
Image of Safariland Model 6360 ALS/SLS Mid-Ride Level-III Duty Holster for Glock, Left Hand 55 models Safariland Model 6360 ALS/SLS Mid-Ride Level-III Duty Holster for Glock, Left Hand As Low As (Save Up to 28%) $134.49 Blazin' Deal
Image of Safariland Model 6004 SLS Drop-Leg Glock Holster 3 models Safariland Model 6004 SLS Drop-Leg Glock Holster As Low As (Save Up to 20%) $195.20
Image of Galco Fletch High Ride Leather OWB Belt Holster made-in-usa-flag 60 models Galco Fletch High Ride Leather OWB Belt Holster (22) As Low As (Save Up to 49%) $89.99 On Sale
Image of TruGlo Tritium / Fiber Optic TFO Hand Gun Sights - Green Front/Yellow Rear made-in-usa-flag 3 models TruGlo Tritium / Fiber Optic TFO Hand Gun Sights - Green Front/Yellow Rear (31) As Low As (Save Up to 30%) $83.99 Best Rated
Image of Safariland 6304 ALS/SLS Drop-Leg Glock Tactical Holster 44 models Safariland 6304 ALS/SLS Drop-Leg Glock Tactical Holster (5) As Low As (Save Up to 29%) $179.99 Blazin' Deal
Image of Gould & Goodrich Three Slot Pancake Concealment OWB Belt Holster 72 models Gould & Goodrich Three Slot Pancake Concealment OWB Belt Holster (19) As Low As (Save Up to 46%) $55.49 On Sale
Image of TruGlo Brite-Site TFX Sights For Glock 20/21/25/28/29/30/31/32/37/40/41 made-in-usa-flag TruGlo Brite-Site TFX Sights For Glock 20/21/25/28/29/30/31/32/37/40/41 (2) List: $159.99 (Save 22%) $124.79
Image of Safariland 6360 ALS/SLS Mid-Ride Level III Glock Duty Holsters, STX 95 models Safariland 6360 ALS/SLS Mid-Ride Level III Glock Duty Holsters, STX As Low As (Save Up to 51%) $89.49 Blazin' Deal
Image of GunfightersINC Ronin OWB Holster 12 models GunfightersINC Ronin OWB Holster (1) List: $79.00 (Save 19%) $63.75 Final Sale
Image of LaserMax Guide Rod Red Laser Sight for Glock 20/21/41 2 models LaserMax Guide Rod Red Laser Sight for Glock 20/21/41 (5) As Low As (Save Up to 52%) $142.59 Clearance
Image of Safariland 7378 7TS ALS Concealment Paddle/Belt Loop Glock Holster made-in-usa-flag 120 models Safariland 7378 7TS ALS Concealment Paddle/Belt Loop Glock Holster (15) As Low As (Save Up to 20%) $56.00 Blazin' Deal
Image of High Speed Gear Warrior Combo Single Point Drop Leg Holster made-in-usa-flag 32 models High Speed Gear Warrior Combo Single Point Drop Leg Holster As Low As (Save Up to 55%) $74.49 Blazin' Deal
Image of Comp-Tac MTAC Inside The Waistband Hybrid Concealed Carry Holster made-in-usa-flag 66 models Comp-Tac MTAC Inside The Waistband Hybrid Concealed Carry Holster (8) As Low As (Save Up to 44%) $47.87 Blazin' Deal
Image of Galco Yaqui Slide Belt Holster for Glock 21 and S&W J Fr, Leather made-in-usa-flag 6 models Galco Yaqui Slide Belt Holster for Glock 21 and S&W J Fr, Leather (5) As Low As (Save Up to 36%) $77.99 On Sale
Image of Gould & Goodrich Leather Concealment Shoulder Holster 15 models Gould & Goodrich Leather Concealment Shoulder Holster (13) As Low As (Save Up to 39%) $153.64 On Sale
Image of Galco Concealable 2.0 Belt Holster made-in-usa-flag 36 models Galco Concealable 2.0 Belt Holster (5) As Low As (Save Up to 43%) $97.99 On Sale
Image of Safariland 7304 7TS ALS/SLS Level III Retention Tactical Holsters 66 models Safariland 7304 7TS ALS/SLS Level III Retention Tactical Holsters As Low As (Save Up to 29%) $151.20 Blazin' Deal
Image of Safariland 7365 7TS ALS/SLS Low-Ride Level III Retention OWB Duty Holster 70 models Safariland 7365 7TS ALS/SLS Low-Ride Level III Retention OWB Duty Holster As Low As (Save Up to 33%) $142.49 Blazin' Deal
Image of Safariland 7365 7TS ALS/SLS Low-Ride, Level III Retention Duty Holster, Glock 34/35 Gen1-5 w/ Inforce APL, RH 21 models Safariland 7365 7TS ALS/SLS Low-Ride, Level III Retention Duty Holster, Glock 34/35 Gen1-5 w/ Inforce APL, RH (1) As Low As (Save Up to 20%) $158.00
Image of TruGlo Brite Site Tritium Pro Green Night Sight Set for Glock High MOS made-in-usa-flag TruGlo Brite Site Tritium Pro Green Night Sight Set for Glock High MOS (4) List: $95.99 (Save 10%) $86.19
Image of Safariland Model 6390 ALS Mid-Ride Level-I Duty Glock Holster 71 models Safariland Model 6390 ALS Mid-Ride Level-I Duty Glock Holster (1) As Low As (Save Up to 29%) $110.49 Blazin' Deal
Image of Bulldog Cases & Vaults Right Hand Hip Holsters DLX 8 models Bulldog Cases & Vaults Right Hand Hip Holsters DLX (1) As Low As (Save Up to 33%) $12.75
Image of Gould & Goodrich K-Force Double Magazine Pouch 6 models Gould & Goodrich K-Force Double Magazine Pouch (2) As Low As (Save Up to 42%) $35.49 On Sale
Image of TruGlo Fiber Optic Sights made-in-usa-flag 3 models TruGlo Fiber Optic Sights (49) As Low As (Save Up to 17%) $58.31 Best Rated
Image of BlackHawk Draw Tactical SERPA L2 Holsters 5 models BlackHawk Draw Tactical SERPA L2 Holsters (11) As Low As (Save Up to 40%) $95.89 Best Rated
Image of Cross Armory Magazine Catches 5 models Cross Armory Magazine Catches As Low As (Save Up to 52%) $10.49 Blazin' Deal
Image of Galco Underwraps Belly Band 2.0 IWB Holster made-in-usa-flag 8 models Galco Underwraps Belly Band 2.0 IWB Holster (2) As Low As (Save Up to 31%) $59.99
Image of Galco PLE Unlined Paddle Leather Holster made-in-usa-flag 7 models Galco PLE Unlined Paddle Leather Holster As Low As (Save Up to 36%) $97.99
Image of Comp-Tac Blue Duty Holster Series Optics Covered 6 models Comp-Tac Blue Duty Holster Series Optics Covered (1) As Low As (Save Up to 45%) $81.77 Clearance
Image of Tag Precision Glock TSF TAC Pistol Sights Fiber Optic made-in-usa-flag 2 models Tag Precision Glock TSF TAC Pistol Sights Fiber Optic (2) List: $69.95 (Save $5.60) $64.35
Image of Safariland Model 6378 ALS Paddle/Belt Loop Glock Holster - Left Hand, STX Tactical 48 models Safariland Model 6378 ALS Paddle/Belt Loop Glock Holster - Left Hand, STX Tactical (1) As Low As (Save Up to 29%) $54.49 Blazin' Deal
Image of Safariland 7395 7TS ALS Low Ride Level-I Retention Duty Holster 17 models Safariland 7395 7TS ALS Low Ride Level-I Retention Duty Holster As Low As (Save Up to 27%) $110.49 Blazin' Deal
Image of Galco Concealable Belt Holsters, Leather made-in-usa-flag 26 models Galco Concealable Belt Holsters, Leather (31) As Low As (Save Up to 33%) $112.67 On Sale
Image of Safariland Model 6378 ALS Paddle/Belt Loop Glock Holster - Left Hand, STX Basket Weave & Hi-Gloss 81 models Safariland Model 6378 ALS Paddle/Belt Loop Glock Holster - Left Hand, STX Basket Weave & Hi-Gloss As Low As (Save Up to 27%) $56.00 Blazin' Deal
Image of Tag Precision Glock TSH TAC Pistol Sights Fiber Optic made-in-usa-flag 2 models Tag Precision Glock TSH TAC Pistol Sights Fiber Optic (7) List: $59.15 (Save $4.73) $54.42 Best Rated
Image of Recover Tactical G7 OWB Paddle Holsters Recover Tactical G7 OWB Paddle Holsters (6) List: $49.95 (Save $4.00) $45.95 Best Rated
Image of Safariland Model 6280 SLS Mid-Ride Level II Retention Duty Holster 3 models Safariland Model 6280 SLS Mid-Ride Level II Retention Duty Holster As Low As (Save Up to 14%) $133.99
Image of Comp-Tac Blue Duty Holster Series Optics Uncovered 17 models Comp-Tac Blue Duty Holster Series Optics Uncovered (3) List: $148.00 (Save 15%) $125.80
Image of BlackHawk CQC SERPA w/Belt Loop and Paddle Holsters 23 models BlackHawk CQC SERPA w/Belt Loop and Paddle Holsters (372) As Low As (Save Up to 33%) $35.57 Best Rated
Image of Elite Survival System Tactical Belt Holster made-in-usa-flag 8 models Elite Survival System Tactical Belt Holster (9) As Low As (Save Up to 73%) $18.49 Blazin' Deal
Image of Cross Armory Operator Kits 3-Piece w/3-Pin Set 3 models Cross Armory Operator Kits 3-Piece w/3-Pin Set (3) As Low As (Save Up to 12%) $40.67
Image of Galco Quick Slide Belt Holster made-in-usa-flag 5 models Galco Quick Slide Belt Holster As Low As (Save Up to 39%) $45.49
Image of TUFF Products EDGE Slide-On Double Mag Pouch w/ Hidden Snap 3 models TUFF Products EDGE Slide-On Double Mag Pouch w/ Hidden Snap As Low As (Save Up to 33%) $20.41 On Sale
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