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FAB Defense Gun Parts for Sale Up to 86% Off — 118 products / 317 models

These FAB Defense Gun Parts result from high-quality materials and fierce innovation, providing the upgrades you need to deliver your best performance in the field, at target practice, or on a hunting expedition. FAB Defense focuses on the ergonomics, durability, and functionality of each gun part they craft. Enhance your AR-15 with the grips, handguards, and buttstocks you need to improve your handling and create a more comfortable shooting experience. FAB Defense also develops cutting-edge AK stocks, including folding buttstock systems that provide incredible tactical utility and fold away for easy storage.image

What Does FAB Defense Specialize In?

FAB Defense specializes in high-quality polymer aftermarket gun parts for pistols and rifles, such as pistol grips, foregrips, rubberized buttstocks, bipods, and more. FAB Defense makes these gun parts in colors such as flat dark earth, od green, and tan so your gun parts can match your Glock, handgun, AR-15, and more!

Shop FAB Defense at OpticsPlanet Today!

Whether you're looking to upgrade your rifle, pistol, or shotgun, these FAB Defense gun parts won't disappoint. Grab all the latest and greatest gear here at OpticsPlanet to step up your game at the range or on the hunting grounds. Shop online with us today to get FREE shipping on orders over $49.

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Image of Rifle Parts category Rifle Parts
Image of AR 15 Parts category AR 15 Parts
Image of AK Parts & AKM Parts category AK Parts & AKM Parts
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Image of Pistol Parts category Pistol Parts

118 Products in FAB Defense Gun Parts

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Image of FAB Defense GL-Core Impact CP AR-15 Buttstock 3 models FAB Defense GL-Core Impact CP AR-15 Buttstock (41) List: $119.05 (Save $9.45) $109.60 Best Rated
Image of FAB Defense GL-Core Impact AR-15 Buttstock 3 models FAB Defense GL-Core Impact AR-15 Buttstock (70) List: $108.80 (Save $8.70) $100.10 Best Rated
Image of FAB Defense Top Mounted Deployable Front and Rear Set of Flip-up Sights 5 models FAB Defense Top Mounted Deployable Front and Rear Set of Flip-up Sights (53) As Low As (Save Up to 56%) $41.49 Blazin' Deal
Image of FAB Defense Universal Picatinny Rail Handgun Mount 2 models FAB Defense Universal Picatinny Rail Handgun Mount (33) As Low As (Save Up to 48%) $41.49 Blazin' Deal
Image of FAB Defense Recoil Compensating Folding, Collapsible Buttstock System for VZ58 - Polymer Joint 6 models FAB Defense Recoil Compensating Folding, Collapsible Buttstock System for VZ58 - Polymer Joint (3) As Low As (Save Up to 79%) $47.49 Blazin' Deal
Image of FAB Defense Rubberized Pistol Grip for M16/M4/AR-15 2 models FAB Defense Rubberized Pistol Grip for M16/M4/AR-15 (160) List: $35.20 (Save $2.80) $32.40 Best Rated
Image of FAB Defense AR-15/M4 Stock With Battery Storage And Rubber Buttpad 3 models FAB Defense AR-15/M4 Stock With Battery Storage And Rubber Buttpad (29) As Low As (Save Up to 65%) $29.49 Blazin' Deal
Image of FAB Defense Rapid Adjustable Precision Buttstock 2 models FAB Defense Rapid Adjustable Precision Buttstock (63) List: $172.00 (Save $13.70) $158.30 Best Rated
Image of FAB Defense Rubberized Ergonomic Pistol Grip for AK-47 3 models FAB Defense Rubberized Ergonomic Pistol Grip for AK-47 (51) As Low As (Save Up to 73%) $9.49 Blazin' Deal
Image of FAB Defense AR15/M4 Collapsible Buttstock for Remington 870 w/ Shock Absorber Option 5 models FAB Defense AR15/M4 Collapsible Buttstock for Remington 870 w/ Shock Absorber Option (11) As Low As (Save Up to 19%) $139.99 Free 2 Day Shipping
Image of FAB Defense AR-15/M16 Aluminum Picatinny Quad Rail Handguard 3 models FAB Defense AR-15/M16 Aluminum Picatinny Quad Rail Handguard (4) As Low As (Save Up to 53%) $114.49 Blazin' Deal
Image of FAB Defense M4 Folding Collapsible Buttstock for Zastava M70 B1, B3 / M77 B1 4 models FAB Defense M4 Folding Collapsible Buttstock for Zastava M70 B1, B3 / M77 B1 (2) As Low As (Save Up to 77%) $39.49 Blazin' Deal
Image of FAB Defense Aluminum Tactical Rail System 7 models FAB Defense Aluminum Tactical Rail System (2) As Low As (Save Up to 79%) $52.49 Blazin' Deal
Image of FAB Defense Tactical Folding Buttstock w/ Cheek Riser 3 models FAB Defense Tactical Folding Buttstock w/ Cheek Riser (21) As Low As (Save Up to 72%) $42.49 Blazin' Deal
Image of FAB Defense M4 Collapsible Buttstock System 6 models FAB Defense M4 Collapsible Buttstock System As Low As (Save Up to 80%) $34.49 Blazin' Deal
Image of FAB Defense AR-15 / M4 / M16 Quick Release Front Gun Grip Magazine Adapter 3 models FAB Defense AR-15 / M4 / M16 Quick Release Front Gun Grip Magazine Adapter (11) As Low As (Save Up to 54%) $20.49 Blazin' Deal
Image of FAB Defense GL-CORE S CQB Optimized Combat Stock 3 models FAB Defense GL-CORE S CQB Optimized Combat Stock (64) As Low As (Save Up to 43%) $44.49 Blazin' Deal
Image of FAB Defense MOJO Improved Mag-Well w/Replaceable Grips 3 models FAB Defense MOJO Improved Mag-Well w/Replaceable Grips (20) As Low As (Save Up to 67%) $18.49 Blazin' Deal
Image of FAB Defense GL-Shock with a GSPC Cheek Riser and GSPCP Picatinny Rail Adaptor 4 models FAB Defense GL-Shock with a GSPC Cheek Riser and GSPCP Picatinny Rail Adaptor (13) As Low As (Save Up to 47%) $70.49 Blazin' Deal
Image of FAB Defense Top Mounted Deployable Rear Sight 3 models FAB Defense Top Mounted Deployable Rear Sight (11) As Low As (Save Up to 66%) $20.49 Blazin' Deal
Image of FAB Defense R.A.P.S - Rapid Adjustment Precision Stock - Collapsible 3 models FAB Defense R.A.P.S - Rapid Adjustment Precision Stock - Collapsible (25) As Low As (Save Up to 27%) $131.49 Blazin' Deal
Image of FAB Defense Top Mounted Deployable Front Sight 3 models FAB Defense Top Mounted Deployable Front Sight (17) As Low As (Save Up to 56%) $17.49 Blazin' Deal
Image of FAB Defense M4 Buttstock for Remmington 870 2 models FAB Defense M4 Buttstock for Remmington 870 (9) As Low As (Save Up to $20.40) $147.20 Free 2 Day Shipping
Image of FAB Defense M4 Collapsible Buttstock for SAIGA (Joint) 5 models FAB Defense M4 Collapsible Buttstock for SAIGA (Joint) As Low As (Save Up to 79%) $42.49 Blazin' Deal
Image of FAB Defense M4 Folding, Collapsible Buttstock for AK47 3 models FAB Defense M4 Folding, Collapsible Buttstock for AK47 (3) As Low As (Save Up to 76%) $41.49 Blazin' Deal
Image of FAB Defense Gradus Rubberized Ergonomic AK Pistol Grip 3 models FAB Defense Gradus Rubberized Ergonomic AK Pistol Grip (23) As Low As (Save Up to 70%) $7.49 Blazin' Deal
Image of FAB Defense GL-CORE CP AR-15 Buttstock for Mil-Spec and Commercial Tubes 3 models FAB Defense GL-CORE CP AR-15 Buttstock for Mil-Spec and Commercial Tubes (109) List: $92.65 (Save $7.35) $85.30 Best Rated
Image of FAB Defense Vanguard VZ M-LOK Compatible SA-VZ.58 Handguard 3 models FAB Defense Vanguard VZ M-LOK Compatible SA-VZ.58 Handguard (5) As Low As (Save Up to 67%) $14.49 Blazin' Deal
Image of FAB Defense Ergonomic Pistol Grip for AK-47 3 models FAB Defense Ergonomic Pistol Grip for AK-47 (10) As Low As (Save Up to 71%) $9.49 Blazin' Deal
Image of FAB Defense Folding Buttstock w/ Cheek Piece 3 models FAB Defense Folding Buttstock w/ Cheek Piece (2) As Low As (Save Up to 62%) $78.49 Blazin' Deal
Image of FAB Defense M4 Collapsible Stock Optics-Ready Pro Kit For Ruger 10/22 3 models FAB Defense M4 Collapsible Stock Optics-Ready Pro Kit For Ruger 10/22 (19) As Low As (Save Up to $20.81) $203.49 Blazin' Deal
Image of FAB Defense Handguard w/Rails For Remington Model 870 3 models FAB Defense Handguard w/Rails For Remington Model 870 (14) As Low As (Save Up to 65%) $22.49 Blazin' Deal
Image of FAB Defense VZ58 Set of Lower and Upper Handguards 6 models FAB Defense VZ58 Set of Lower and Upper Handguards (5) As Low As (Save Up to 83%) $13.49 Blazin' Deal
Image of FAB Defense GL CORE MAG CP - M4 Survival Buttstock w/ Built-in Mag Carrier 4 models FAB Defense GL CORE MAG CP - M4 Survival Buttstock w/ Built-in Mag Carrier (96) As Low As (Save Up to $11.10) $112.70 Best Rated
Image of FAB Defense Tactical Folding Buttstock w/ Cheek Riser for AKS-7U Krinkov 6 models FAB Defense Tactical Folding Buttstock w/ Cheek Riser for AKS-7U Krinkov As Low As (Save Up to 81%) $31.49 Blazin' Deal
Image of FAB Defense Upper and Lower Handguard Rail System Set for AK-47 3 models FAB Defense Upper and Lower Handguard Rail System Set for AK-47 (24) As Low As (Save Up to 65%) $27.49 Blazin' Deal
Image of FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option 2 models FAB Defense AR15/M4 Collapsible Buttstock for Mossberg 500 w/ Shock Absorber Option (11) As Low As (Save Up to $22.40) $191.10 Free 2 Day Shipping
Image of FAB Defense Gradus Rubberized Ergonomic AR Pistol Grip 3 models FAB Defense Gradus Rubberized Ergonomic AR Pistol Grip (111) List: $25.00 (Save $2.00) $23.00 Best Rated
Image of FAB Defense Handguard Accessory Rail System For Mossberg 500/590 3 models FAB Defense Handguard Accessory Rail System For Mossberg 500/590 (15) As Low As (Save Up to 65%) $22.49 Blazin' Deal
Image of FAB Defense UAS-PRO Ruger 10/22 UAS Precision Stock Conversion Kit 3 models FAB Defense UAS-PRO Ruger 10/22 UAS Precision Stock Conversion Kit (11) List: $205.00 (Save $16.40) $188.60 Best Rated
Image of FAB Defense Remington 870 Pistol Grip FAB Defense Remington 870 Pistol Grip (1) List: $48.00 (Save 68%) $15.49 Blazin' Deal
Image of FAB Defense M4 Folding, Collapsible Buttstock for VZ58 2 models FAB Defense M4 Folding, Collapsible Buttstock for VZ58 As Low As (Save Up to 62%) $136.49 Blazin' Deal
Image of FAB Defense M4 SKS SB Complete Chassis System, w/ Shock Absorbing M4 Tube & Buttstock 3 models FAB Defense M4 SKS SB Complete Chassis System, w/ Shock Absorbing M4 Tube & Buttstock (6) List: $340.50 (Save $27.20) $313.30
Image of FAB Defense M-LOK Compatible Handguard for Remington Model 870 3 models FAB Defense M-LOK Compatible Handguard for Remington Model 870 (8) As Low As (Save Up to 72%) $9.49 Blazin' Deal
Image of FAB Defense GL-CORE S CP CQB Optimized Combat Stock 3 models FAB Defense GL-CORE S CP CQB Optimized Combat Stock (69) List: $92.65 (Save $7.35) $85.30 Best Rated
Image of FAB Defense SA. VZ. 58 Pistol Grip 2 models FAB Defense SA. VZ. 58 Pistol Grip (5) List: $39.95 (Save 69%) $12.49 Blazin' Deal
Image of FAB Defense NFR M16 Aluminum Picatinny Quad Rail Handguard FAB Defense NFR M16 Aluminum Picatinny Quad Rail Handguard (3) List: $189.00 (Save $15.10) $173.90
Image of FAB Defense GL-CORE AR-15/M4 Skeleton Style Buttstock For Mil-Spec/Commercial Tubes 4 models FAB Defense GL-CORE AR-15/M4 Skeleton Style Buttstock For Mil-Spec/Commercial Tubes (135) As Low As $77.20 13% Coupon
Image of FAB Defense Top Mounted Deployable Front and Rear Sight for Right Hand 3 models FAB Defense Top Mounted Deployable Front and Rear Sight for Right Hand (19) List: $93.70 (Save $7.40) $86.30 Best Rated
Image of FAB Defense UAS SAIGA Tactical Buttstock with Cheek Riser 2 models FAB Defense UAS SAIGA Tactical Buttstock with Cheek Riser As Low As (Save Up to 55%) $81.49 Blazin' Deal
Image of FAB Defense AK-47 Vanguard M-LOK Handguard System 3 models FAB Defense AK-47 Vanguard M-LOK Handguard System (34) As Low As (Save Up to 43%) $25.49 Blazin' Deal
Image of FAB Defense M4 Buttstock for Mossberg 500 FAB Defense M4 Buttstock for Mossberg 500 (7) List: $255.00 (Save $20.40) $234.60 Free 2 Day Shipping
Image of FAB Defense Heckler & Koch MP5K Aluminum Picatinny Rail System FAB Defense Heckler & Koch MP5K Aluminum Picatinny Rail System (3) List: $282.00 (Save 26%) $208.49 Blazin' Deal
Image of FAB Defense M4 SKS Complete Chassis System, w/ M4 Buttstock 3 models FAB Defense M4 SKS Complete Chassis System, w/ M4 Buttstock (10) List: $278.00 (Save $22.20) $255.80 Free 2 Day Shipping
Image of FAB Defense Ergonomic Pistol Grip for AR15/M16/M4 3 models FAB Defense Ergonomic Pistol Grip for AR15/M16/M4 (100) List: $27.05 (Save $2.15) $24.90 Best Rated
Image of FAB Defense UAS SKS Complete Chassis System, w/ UAS Buttstock 3 models FAB Defense UAS SKS Complete Chassis System, w/ UAS Buttstock (18) List: $234.50 (Save $18.70) $215.80 Free 2 Day Shipping
Image of FAB Defense UPT TAR-21 Tavor Picatinny Rail 2 models FAB Defense UPT TAR-21 Tavor Picatinny Rail As Low As (Save Up to 80%) $17.49 Blazin' Deal
Image of FAB Defense Side By Side Dual Picatinny Rail For M16/AR-15 FAB Defense Side By Side Dual Picatinny Rail For M16/AR-15 (1) List: $66.00 (Save 52%) $31.49 Blazin' Deal
Image of Fab Defense M4 Folding Buttstock for MP5 2 models Fab Defense M4 Folding Buttstock for MP5 (2) As Low As (Save Up to 60%) $88.49 Blazin' Deal
Image of FAB Defense Vanguard M16 MLOK Compatible Picatinny Handguard 3 models FAB Defense Vanguard M16 MLOK Compatible Picatinny Handguard (21) As Low As (Save Up to 67%) $16.49 Blazin' Deal
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    Last updated 2026-07-24 UTC.