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FAB Defense AR15 Parts for Sale Up to 83% Off — 66 products / 233 models

Enhance your latest weapon build with the high-performance FAB Defense AR15 Parts. FAB Defense develops innovative AR-15 parts aimed to improve your tactical utility in the field while creating a next-gen aesthetic that finally makes your weapon feel like it's truly yours. Their AR-15 Buttstocks allow you to comfortably shoulder your weapon and gain better control of your shots on target. With their collection of handguards, you can improve your grip while increasing your customization options with more rail space for lights, lasers, and other accessories.image

Whether you need FAB Defense Gun Parts for your lower or upper receiver, you'll find them right here at OpticsPlanet.

Buy FAB Defense AR15 Parts from OpticsPlanet!

Upgrade your weapon build today with all of the greatest tactical, hunting, and outdoor gear around at OpticsPlanet. Shop online with us to discover the latest gizmos and gadgets for your arsenal, and you'll get FREE shipping on orders over $49.

If you're looking for help in choosing the right product for your AR15, don't hesitate to contact our team of industry experts via email, phone, or website. We also have an extensive library of "How-To" guides including many specific AR15 Part Guides.

Looking for Ammo? We have plenty on hand that's ready to ship today!

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Image of AR15 Stocks category AR15 Stocks
Image of AR15 Lower Parts category AR15 Lower Parts
Image of AR15 Upper Parts category AR15 Upper Parts
Image of AR Handguards & Forends category AR Handguards & Forends

66 Products in FAB Defense AR15 Parts

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Image of FAB Defense Top Mounted Deployable Rear Sight 4 models FAB Defense Top Mounted Deployable Rear Sight (11) As Low As (Save Up to 76%) $15.20 Blazin' Deal
Image of FAB Defense GL CORE MAG CP - M4 Survival Buttstock w/ Built-in Mag Carrier 8 models FAB Defense GL CORE MAG CP - M4 Survival Buttstock w/ Built-in Mag Carrier (88) As Low As (Save Up to 63%) $51.49 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 49%) $181.49 Blazin' Deal
Image of FAB Defense M4 Collapsible Buttstock for SAIGA (Joint) 4 models FAB Defense M4 Collapsible Buttstock for SAIGA (Joint) As Low As (Save Up to 77%) $47.49 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 75%) $42.49 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 76%) $53.49 Blazin' Deal
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 (44) As Low As (Save Up to 54%) $43.49 Blazin' Deal
Image of FAB Defense GL-Core Impact CP AR-15 Buttstock 4 models FAB Defense GL-Core Impact CP AR-15 Buttstock (36) As Low As (Save Up to 22%) $92.49 Blazin' Deal
Image of FAB Defense R.A.P.S - Rapid Adjustment Precision Stock - Collapsible 7 models FAB Defense R.A.P.S - Rapid Adjustment Precision Stock - Collapsible (21) As Low As (Save Up to 51%) $87.49 Blazin' Deal
Image of FAB Defense GL-Core Impact AR-15 Buttstock 3 models FAB Defense GL-Core Impact AR-15 Buttstock (68) List: $108.80 (Save $8.70) $100.10 Best Rated
Image of FAB Defense Rapid Adjustable Precision Buttstock 4 models FAB Defense Rapid Adjustable Precision Buttstock (58) As Low As (Save Up to 29%) $122.49 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 59%) $90.49 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 (155) List: $35.20 (Save $1.21) $33.99 Best Rated
Image of FAB Defense GL-Shock with a GSPC Cheek Riser and GSPCP Picatinny Rail Adaptor 5 models FAB Defense GL-Shock with a GSPC Cheek Riser and GSPCP Picatinny Rail Adaptor (11) As Low As (Save Up to 64%) $47.49 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) List: $78.50 (Save $6.20) $72.30 Up to 12% Coupon
Image of FAB Defense M4 Folding, Collapsible Buttstock for AK47 6 models FAB Defense M4 Folding, Collapsible Buttstock for AK47 (3) As Low As (Save Up to 78%) $38.49 Blazin' Deal
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 (28) List: $83.90 (Save $6.70) $77.20 12% Coupon
Image of FAB Defense Tactical Folding Buttstock w/ Cheek Riser 3 models FAB Defense Tactical Folding Buttstock w/ Cheek Riser (20) As Low As (Save Up to 70%) $45.49 Blazin' Deal
Image of FAB Defense GL-CORE S CP CQB Optimized Combat Stock 4 models FAB Defense GL-CORE S CP CQB Optimized Combat Stock (69) As Low As (Save Up to 34%) $61.49 Blazin' Deal
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%) $116.49 Blazin' Deal
Image of FAB Defense MOJO Improved Mag-Well w/Replaceable Grips 3 models FAB Defense MOJO Improved Mag-Well w/Replaceable Grips (19) List: $56.40 (Save $4.50) $51.90 12% Coupon
Image of FAB Defense Top Mounted Deployable Front Sight 3 models FAB Defense Top Mounted Deployable Front Sight (16) List: $39.95 (Save $3.15) $36.80 Up to 12% Coupon
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 78%) $35.49 Blazin' Deal
Image of FAB Defense Galil-Style Folding, Collapsible Buttstock for AK47 6 models FAB Defense Galil-Style Folding, Collapsible Buttstock for AK47 As Low As (Save Up to 51%) $175.49 Blazin' Deal
Image of FAB Defense Tactical Folding Buttstock w/ Cheek Riser for Milled AK 2 models FAB Defense Tactical Folding Buttstock w/ Cheek Riser for Milled AK (3) As Low As (Save Up to 77%) $33.49 Blazin' Deal
Image of FAB Defense M4 Collapsible Stock Optics-Ready Pro Kit For Ruger 10/22 5 models FAB Defense M4 Collapsible Stock Optics-Ready Pro Kit For Ruger 10/22 (18) As Low As (Save Up to 18%) $183.49 Blazin' Deal
Image of FAB Defense AR-15 Kit 2 models FAB Defense AR-15 Kit (1) List: $310.00 (Save $24.80) $285.20 Free 2 Day Shipping
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 (10) List: $44.95 (Save $3.55) $41.40 11% Coupon
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 61%) $81.49 Blazin' Deal
Image of FAB Defense GLSHOCK AR-15/M16/M4 Recoil Reducing Stock Polymer 5 models FAB Defense GLSHOCK AR-15/M16/M4 Recoil Reducing Stock Polymer (44) As Low As (Save Up to 48%) $56.49 Blazin' Deal
Image of FAB Defense M4 Folding, Collapsible Buttstock for AKS-7U Krinkov 4 models FAB Defense M4 Folding, Collapsible Buttstock for AKS-7U Krinkov As Low As (Save Up to 76%) $53.49 Blazin' Deal
Image of FAB Defense M4 Folding, Collapsible Buttstock for Milled AK 2 models FAB Defense M4 Folding, Collapsible Buttstock for Milled AK (3) As Low As (Save Up to 75%) $42.49 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 Free 2 Day Shipping
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 (108) List: $92.65 (Save $7.35) $85.30 Best Rated
Image of FAB Defense Top Mounted Deployable Front and Rear Sight for Left Hand 5 models FAB Defense Top Mounted Deployable Front and Rear Sight for Left Hand (4) As Low As (Save Up to 31%) $70.49 Blazin' Deal
Image of FAB Defense Collapsible Buttstock Tube for AK-47 6 models FAB Defense Collapsible Buttstock Tube for AK-47 (4) As Low As (Save Up to 80%) $21.49 Blazin' Deal
Image of FAB Defense MBA Mono-Pod Buttstock Add-on 6 models FAB Defense MBA Mono-Pod Buttstock Add-on (10) As Low As (Save Up to 78%) $21.49 Blazin' Deal
Image of FAB Defense Tactical Folding Buttstock w/ Cheek Riser for AKMS 2 models FAB Defense Tactical Folding Buttstock w/ Cheek Riser for AKMS (2) As Low As (Save Up to 50%) $80.49 Blazin' Deal
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 (132) As Low As $77.20 Best Rated
Image of FAB Defense Ergonomic Pistol Grip for AR15/M16/M4 3 models FAB Defense Ergonomic Pistol Grip for AR15/M16/M4 (96) As Low As (Save Up to 29%) $27.49 Best Rated
Image of FAB Defense Vanguard M16 MLOK Compatible Picatinny Handguard 3 models FAB Defense Vanguard M16 MLOK Compatible Picatinny Handguard (21) List: $49.90 (Save $3.90) $46.00
Image of FAB Defense GLSHOCKCP Recoil-Reducing M4/M16 Buttstock 4 models FAB Defense GLSHOCKCP Recoil-Reducing M4/M16 Buttstock (33) As Low As (Save Up to 44%) $66.49 Blazin' Deal
Image of FAB Defense Mojo Replaceable Decorative Insert, Elongated Skull FAB Defense Mojo Replaceable Decorative Insert, Elongated Skull List: $36.50 (Save $2.90) $33.60
Image of FAB Defense MOJO-TAC Improved Mag-Well Mask 3 models FAB Defense MOJO-TAC Improved Mag-Well Mask (1) List: $36.50 (Save $2.90) $33.60
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) As Low As (Save Up to 22%) $72.99 Best Rated
Image of FAB Defense Gradus Rubberized Ergonomic AR Pistol Grip 3 models FAB Defense Gradus Rubberized Ergonomic AR Pistol Grip (108) As Low As (Save Up to 31%) $24.99 Best Rated
Image of FAB Defense MOJO Improved Mag-Well Mask Spartan Phalanx 3 models FAB Defense MOJO Improved Mag-Well Mask Spartan Phalanx (1) List: $36.50 (Save $2.90) $33.60
Image of FAB Defense MOJO Improved Mag-Well Mask Crusader Cavalier 3 models FAB Defense MOJO Improved Mag-Well Mask Crusader Cavalier (3) List: $36.50 (Save $2.90) $33.60
Image of FAB Defense MOJO Improved Mag-Well Mask Havoc Skull 3 models FAB Defense MOJO Improved Mag-Well Mask Havoc Skull (2) List: $36.50 (Save $2.90) $33.60
Image of FAB Defense GLR16 with a GCP Cheek Riser and GPCP Picatinny Rail Adaptor 7 models FAB Defense GLR16 with a GCP Cheek Riser and GPCP Picatinny Rail Adaptor (4) As Low As (Save Up to 66%) $36.49 Blazin' Deal
Image of FAB Defense Ruger 10/22 Collapsible Stock Conversion Kit 4 models FAB Defense Ruger 10/22 Collapsible Stock Conversion Kit (39) As Low As (Save Up to 22%) $143.99 Blazin' Deal
Image of FAB Defense AR-15/M4 Stock With Adjustable Cheek Riser Battery Storage And Rubber Buttpad 3 models FAB Defense AR-15/M4 Stock With Adjustable Cheek Riser Battery Storage And Rubber Buttpad (71) As Low As (Save Up to 27%) $67.99 On Sale
Image of FAB Defense GL-Shock Adjustable Cheek Riser w/ Picatinny Rail Adaptor 3 models FAB Defense GL-Shock Adjustable Cheek Riser w/ Picatinny Rail Adaptor (6) List: $32.55 (Save $2.55) $30.00 Best Rated
Image of FAB Defense Magazine Well Grip for M16/M4/AR15 3 models FAB Defense Magazine Well Grip for M16/M4/AR15 (112) As Low As (Save Up to 28%) $25.99
Image of FAB Defense M16/AR15/M4 Ejection Port Cover 3 models FAB Defense M16/AR15/M4 Ejection Port Cover (3) As Low As $9.70
Image of FAB Defense MOJO-EMB Improved Mag-Well Mask 3 models FAB Defense MOJO-EMB Improved Mag-Well Mask (4) List: $36.50 (Save $2.90) $33.60
Image of FAB Defense Gradus X AR Pistol Grip 4 models FAB Defense Gradus X AR Pistol Grip (4) As Low As (Save Up to $1.10) $13.00 Final Sale
Image of FAB Defense Reinforced Polymer Stamped AK Buttstock System 2 models FAB Defense Reinforced Polymer Stamped AK Buttstock System (7) List: $86.65 (Save $6.85) $79.80 Best Rated
Image of FAB Defense Polymer AR-15 3 Rail Picatinny Handguard Gun Grip 2 models FAB Defense Polymer AR-15 3 Rail Picatinny Handguard Gun Grip (9) List: $63.99 (Save 13%) $55.99
Image of FAB Defense Folding Buttstock w/ Cheek Piece for Zastava M70 B1, B3 / M77 B1 FAB Defense Folding Buttstock w/ Cheek Piece for Zastava M70 B1, B3 / M77 B1 (3) List: $144.00 (Save $11.50) $132.50
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