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A3 Industries - Folding Stocks and Adapters, AR Pistol Grips & Other Gun Accessories — 191 products / 435 models

A3 Industries designs premium upgrades to improve your handling and recoil control on nearly any firearm platform. Their wide selection of gun parts features stabilizing braces and adapters that allow for steady one-handed shooting, as well as folding AR stocks that help control your aim when deployed and allow for compact storage and transportation when folded away. We carry several of their gun grips, including AR pistol grips, vertical grips, and angled grips, that aid comfort during extended shooting sessions while ensuring you have full control over recoil.image

Choosing the right rifle stock or grip can be confusing, so we curated several How-to Guides that discuss these accessories to help you buy the best gun part to suit your needs and firearm model. Make sure to check out all our current deals for more ways to save on ammo, optics, and upgrades from top-rated brands like A3 Industries. Shop online at OpticsPlanet today and get Free Shipping on most orders over $49.

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Image of Gun Parts category Gun Parts
Image of Rifle Parts category Rifle Parts
Image of AR15 Accessories category AR15 Accessories
Image of Weapon Accessories category Weapon Accessories
Image of AR15 Front Grips category AR15 Front Grips
Image of Gun Support Grips category Gun Support Grips
Image of Rifle Stocks category Rifle Stocks
Image of Firearm Braces category Firearm Braces
Image of Vertical Foregrips category Vertical Foregrips
Image of Angled Foregrips category Angled Foregrips
Image of AR 15 Parts category AR 15 Parts
Image of AR15 Lower Parts category AR15 Lower Parts
Image of AR15 Pistol Grips category AR15 Pistol Grips
Image of Red Dot Sight Accessories category Red Dot Sight Accessories
Image of Red Dot Sight Mounts category Red Dot Sight Mounts
Image of Red Dot Sights & Accessories category Red Dot Sights & Accessories
Image of Pistol Parts category Pistol Parts
Image of AR15 Stocks category AR15 Stocks
Image of Handstop Grips category Handstop Grips
Image of Rail Covers category Rail Covers

191 Products in A3 Industries

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Image of A3 Industries Masterpiece Arms Defender - Rear Stock Adapter A3 Industries Masterpiece Arms Defender - Rear Stock Adapter (12) List: $71.99 (Save $4.00) $67.99 Best Rated
Image of A3 Industries Versa 1913 Rifle Stock A3 Industries Versa 1913 Rifle Stock (1) List: $179.95 (Save 10%) $162.40 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Springfield Kuna, Folding Rifle Stock 5 models A3 Industries Hda3 Hybrid Polymer Springfield Kuna, Folding Rifle Stock (2) As Low As (Save Up to 14%) $299.99 Blazin' Deal
Image of A3 Industries Adjustable Length Modular Folding Brace, Polymer Steady, Straight Extension 2 models A3 Industries Adjustable Length Modular Folding Brace, Polymer Steady, Straight Extension As Low As (Save Up to 10%) $225.58 Blazin' Deal
Image of A3 Industries 1913 Polymer Folding Triangle Stock A3 Industries 1913 Polymer Folding Triangle Stock (3) List: $109.95 (Save 11%) $97.56 Blazin' Deal
Image of A3 Industries Lower Receiver For Grand Power Stribog A3 Industries Lower Receiver For Grand Power Stribog (4) List: $199.95 (Save 10%) $180.45 Blazin' Deal
Image of A3 Industries Adjustable Length Modular Folding Stock, Offset Extension, A3T Butt-Plate A3 Industries Adjustable Length Modular Folding Stock, Offset Extension, A3T Butt-Plate List: $259.95 (Save 10%) $234.60 Blazin' Deal
Image of A3 Industries Modular Fixed Length Folding Brace, Aluminum Steady-Brace, Offset Extension 3 models A3 Industries Modular Fixed Length Folding Brace, Aluminum Steady-Brace, Offset Extension (1) List: $249.95 (Save 10%) $225.58 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Grand Power Stribog, Folding Stabilizing Brace 4 models A3 Industries Hda3 Hybrid Polymer Grand Power Stribog, Folding Stabilizing Brace As Low As (Save Up to 10%) $315.88 Blazin' Deal
Image of A3 Industries Universal Picatinny Mount - Modular Telescoping Stock 9 models A3 Industries Universal Picatinny Mount - Modular Telescoping Stock (7) As Low As (Save Up to 10%) $225.58 Blazin' Deal
Image of A3 Industries Stribog SP9A3-S Angled Foregrip A3 Industries Stribog SP9A3-S Angled Foregrip (5) List: $59.95 (Save $3.00) $56.95 Blazin' Deal
Image of A3 Industries Adjustable Length Modular Folding Brace, Aluminum Steady, Straight Extension 2 models A3 Industries Adjustable Length Modular Folding Brace, Aluminum Steady, Straight Extension (3) List: $299.95 (Save 10%) $270.70 Blazin' Deal
Image of A3 Industries Modular Telescoping Brace, Tailhook Configuration 3 models A3 Industries Modular Telescoping Brace, Tailhook Configuration List: $249.95 (Save $12.50) $237.45
Image of A3 Industries Xeno True90 Vertical AR Pistol Grip A3 Industries Xeno True90 Vertical AR Pistol Grip (12) List: $34.95 (Save $1.75) $33.20 Blazin' Deal
Image of A3 Industries Skelestock Skeleton Stock A3 Industries Skelestock Skeleton Stock (9) List: $219.95 (Save 10%) $198.50 Blazin' Deal
Image of A3 Industries Triangle Folding Complete Buttstock A3 Industries Triangle Folding Complete Buttstock (10) List: $209.95 (Save 11%) $186.28 Blazin' Deal
Image of A3 Industries 1913 Folding Polymer Stocks 2 models A3 Industries 1913 Folding Polymer Stocks (7) As Low As (Save Up to 14%) $128.66 Blazin' Deal
Image of A3 Industries CQB M-LOK Angled Foregrip 4 models A3 Industries CQB M-LOK Angled Foregrip (2) As Low As (Save Up to $3.25) $61.70 Blazin' Deal
Image of A3 Industries Kriss Vector Angled Foregrips A3 Industries Kriss Vector Angled Foregrips (8) List: $109.95 (Save 14%) $94.01 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Sig Mcx/Rattler, Folding Rifle Stock 5 models A3 Industries Hda3 Hybrid Polymer Sig Mcx/Rattler, Folding Rifle Stock (2) As Low As (Save Up to 26%) $259.99 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Universal 1913, Folding Rifle Stock 4 models A3 Industries Hda3 Hybrid Polymer Universal 1913, Folding Rifle Stock As Low As (Save Up to 10%) $315.88 Blazin' Deal
Image of A3 Industries Direct-Fit GHM Folding Brace A3 Industries Direct-Fit GHM Folding Brace List: $179.95 (Save 14%) $153.86 Blazin' Deal
Image of A3 Industries Modular Fixed Length Folding Brace, Tailhook Configuration, Offset Extension 3 models A3 Industries Modular Fixed Length Folding Brace, Tailhook Configuration, Offset Extension As Low As (Save Up to 10%) $189.48 Blazin' Deal
Image of A3 Industries Xeno Cheek Riser A3 Industries Xeno Cheek Riser (6) List: $49.95 (Save $2.50) $47.45 Blazin' Deal
Image of A3 Industries Modular Folding Stock w/ Picatinny 1913 Mount 21 models A3 Industries Modular Folding Stock w/ Picatinny 1913 Mount (10) As Low As (Save Up to 19%) $169.99 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Cz Bren 2, Folding Stabilizing Brace 4 models A3 Industries Hda3 Hybrid Polymer Cz Bren 2, Folding Stabilizing Brace As Low As (Save Up to 10%) $315.88 Blazin' Deal
Image of A3 Industries 1913 Folding Polymer Stocks w/Riser 2 models A3 Industries 1913 Folding Polymer Stocks w/Riser (2) List: $189.95 (Save 10%) $171.43 Blazin' Deal
Image of A3 Industries Adjustable Length Modular Folding Brace, Tailhook Configuration, Straight Extension 2 models A3 Industries Adjustable Length Modular Folding Brace, Tailhook Configuration, Straight Extension (1) As Low As (Save Up to 10%) $225.58 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Hk Mp5, Folding Stabilizing Brace 4 models A3 Industries Hda3 Hybrid Polymer Hk Mp5, Folding Stabilizing Brace (2) As Low As (Save Up to 10%) $315.88 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Grand Power Stribog, Folding Rifle Stock 4 models A3 Industries Hda3 Hybrid Polymer Grand Power Stribog, Folding Rifle Stock As Low As (Save Up to 10%) $315.88 Blazin' Deal
Image of A3 Industries Side-mount QD Point for Grand Power Stribog A3 Industries Side-mount QD Point for Grand Power Stribog (1) List: $39.95 (Save $2.00) $37.95 Blazin' Deal
Image of A3 Industries M-LOK Modular Vertical Foregrips w/ Integrated Handstop 4 models A3 Industries M-LOK Modular Vertical Foregrips w/ Integrated Handstop (23) As Low As (Save Up to $4.00) $66.45 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Cz Scorpion, Folding Rifle Stock 4 models A3 Industries Hda3 Hybrid Polymer Cz Scorpion, Folding Rifle Stock (1) As Low As (Save Up to 10%) $315.88 Blazin' Deal
Image of A3 Industries Modular Telescoping Brace, Polymer Steady 3 models A3 Industries Modular Telescoping Brace, Polymer Steady (1) List: $249.95 (Save $12.50) $237.45
Image of A3 Industries Hda3 Hybrid Polymer B&T Apc GHM, Folding Rifle Stock 4 models A3 Industries Hda3 Hybrid Polymer B&T Apc GHM, Folding Rifle Stock As Low As (Save Up to 10%) $315.88 Blazin' Deal
Image of A3 Industries PFS-X Polymer Folding Stock 4 models A3 Industries PFS-X Polymer Folding Stock (2) As Low As (Save Up to 10%) $135.33 Blazin' Deal
Image of A3 Industries Kriss Vector Gen3 Angled Foregrip A3 Industries Kriss Vector Gen3 Angled Foregrip (2) List: $74.95 (Save $3.75) $71.20 Blazin' Deal
Image of A3 Industries Rear Stock Adapter for M11/9 2 models A3 Industries Rear Stock Adapter for M11/9 (1) As Low As (Save Up to 20%) $79.99 Blazin' Deal
Image of A3 Industries Aluminum Steady Stabilizing Brace A3 Industries Aluminum Steady Stabilizing Brace List: $89.95 (Save $4.50) $85.45 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer PSA Jakl, Folding Rifle Stock 4 models A3 Industries Hda3 Hybrid Polymer PSA Jakl, Folding Rifle Stock As Low As (Save Up to 15%) $299.25 Blazin' Deal
Image of A3 Industries Xeno Triad - Reduced Angle Ar-Compatible Grip 4 models A3 Industries Xeno Triad - Reduced Angle Ar-Compatible Grip (4) List: $19.95 (Save $1.00) $18.95 Blazin' Deal
Image of A3 Industries Modular Vertical Foregrip For HK MP5-K 4 models A3 Industries Modular Vertical Foregrip For HK MP5-K (8) List: $89.95 (Save $4.97) $84.98 Blazin' Deal
Image of A3 Industries Modular Telescoping Brace, Aluminum Steady 3 models A3 Industries Modular Telescoping Brace, Aluminum Steady List: $299.95 (Save $15.00) $284.95 Free 2 Day Shipping
Image of A3 Industries Hda3 Hybrid Polymer G3/HK91, Folding Rifle Stock 4 models A3 Industries Hda3 Hybrid Polymer G3/HK91, Folding Rifle Stock As Low As (Save Up to 15%) $299.25 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Universal 1913, Folding Stabilizing Brace 4 models A3 Industries Hda3 Hybrid Polymer Universal 1913, Folding Stabilizing Brace (2) As Low As (Save Up to 10%) $315.88 Blazin' Deal
Image of A3 Industries Adjustable Length Modular Folding Stock, Offset Extension, Magpul 2 Butt-Plate A3 Industries Adjustable Length Modular Folding Stock, Offset Extension, Magpul 2 Butt-Plate (1) List: $289.95 (Save 10%) $261.68 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Hk Mp5K, Folding Stabilizing Brace 4 models A3 Industries Hda3 Hybrid Polymer Hk Mp5K, Folding Stabilizing Brace As Low As (Save Up to 10%) $315.88 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Cmmg Dissent, Folding Stabilizing Brace 4 models A3 Industries Hda3 Hybrid Polymer Cmmg Dissent, Folding Stabilizing Brace As Low As (Save Up to 10%) $315.88 Blazin' Deal
Image of A3 Industries Keltec RDB Rail Riser Carry Handle A3 Industries Keltec RDB Rail Riser Carry Handle List: $149.95 (Save 10%) $135.33 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Zenith Zf56/Zf300, Folding Rifle Stock 5 models A3 Industries Hda3 Hybrid Polymer Zenith Zf56/Zf300, Folding Rifle Stock As Low As (Save Up to 15%) $299.25 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Sig Mcx/Rattler, Folding Stabilizing Brace 5 models A3 Industries Hda3 Hybrid Polymer Sig Mcx/Rattler, Folding Stabilizing Brace As Low As (Save Up to 15%) $299.25 Blazin' Deal
Image of A3 Industries Omni Angled Foregrip 2 models A3 Industries Omni Angled Foregrip (2) List: $49.95 (Save $2.50) $47.45 Blazin' Deal
Image of A3 Industries Compact Shorty Vertical Grip w/ Integrated Handstop 4 models A3 Industries Compact Shorty Vertical Grip w/ Integrated Handstop (12) As Low As (Save Up to 15%) $76.15 Blazin' Deal
Image of A3 Industries Modular Rail Riser And Carry Handle 4 models A3 Industries Modular Rail Riser And Carry Handle (1) As Low As (Save Up to 10%) $135.33 Blazin' Deal
Image of A3 Industries MPA Defender Modular Picatinny Vertical Foregrip - 3in Textured Grip A3 Industries MPA Defender Modular Picatinny Vertical Foregrip - 3in Textured Grip $67.99
Image of A3 Industries Hda3 Hybrid Polymer Hda3 Polymer Hybrid Brace - Psa Jakl, Folding Stabilizing Brace 4 models A3 Industries Hda3 Hybrid Polymer Hda3 Polymer Hybrid Brace - Psa Jakl, Folding Stabilizing Brace As Low As (Save Up to 15%) $299.25 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer Springfield Kuna, Folding Stabilizing Brace 4 models A3 Industries Hda3 Hybrid Polymer Springfield Kuna, Folding Stabilizing Brace (1) List: $350.00 (Save $17.50) $332.50
Image of A3 Industries HK MP5-K Angled Front Grip Forend A3 Industries HK MP5-K Angled Front Grip Forend (1) List: $99.95 (Save $5.00) $94.95 Blazin' Deal
Image of A3 Industries Slimline Picatinny Angled Foregrips A3 Industries Slimline Picatinny Angled Foregrips (3) List: $49.95 (Save $2.50) $47.45 Blazin' Deal
Image of A3 Industries Hda3 Hybrid Polymer CMMG Dissent, Folding Rifle Stock 4 models A3 Industries Hda3 Hybrid Polymer CMMG Dissent, Folding Rifle Stock (1) As Low As (Save Up to 15%) $299.25 Blazin' Deal
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A3 Industries How To Guides View All

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    Last updated 2026-07-17 UTC.