Lower Parts
Looking to get new parts for your AR's lower receiver. This is the place to look, with hundreds of parts from stocks and grips to a new mag release button. Shop with Grid Defense to customize and build the best lower receiver you can. Make your firearm look, feel, and perform the best with our selection of OE and aftermarket parts.
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Out of stock
Bravo Company Trigger Guard Mod 0 - FDE
$8.00Bravo Company Trigger Guard Mod 0 - FDE Ergonomically correct shape and contour No sharp edges, Compatible with "duck-billed" grips Made of impact resistant polymer$8.00 -
Magpul MOE K-2 AR Pistol Grip - FDE
$20.95Magpul MOE K-2 AR Pistol Grip - FDE Replacement for AR15/M4 pistol-grip One-piece reinforced polymer construction More vertical grip angle than A2 grips Aggressive TSP texture Weight: 2.9oz Thickness: 1.2" Height: 4.1" Grip Angle: 17...$20.95 -
On Sale
Blem AR-15 80% Fire/Safe Lower Receiver With Mil-Spec Upper Receiver - FDE Anodize
Sale: $90.00MSRP: $244.95Blem AR-15 80% Fire/Safe Lower Receiver With Mil-Spec Upper Receiver - FDE Anodize AR-15 80% Fire/Safe Lower Receiver Machined from 7075-T6 Aluminum Forging FDE Hard Coat Anodize Flared and broached magazine well Rear upper lug pocket cut...Sale: $90.00MSRP: $244.95 -
MIL-SPEC CARBINE BUFFER TUBE - FDE
$30.00MIL-SPEC CARBINE BUFFER TUBE - FDE Made in the USA Compatible with M4 Type Butt Stocks 6 Position Machined from 7075-T6 Aluminum Weight: 3.6oz Flat Dark Earth Cerakote Finish$30.00 -
Out of stock
TIMBER CREEK AR EXTENDED MAGAZINE RELEASE - FLAT DARK EARTH
$19.99AR EXTENDED MAGAZINE RELEASE - FDE Flat dark earth cerakote Aircraft grade billet aluminum Made in the USA Manufactured by Timber Creek Outdoors$19.99 -
Armaspec Superlight AR-15 Lower Parts Kit - FDE
$84.99Armaspec Superlight AR-15 Lower Parts Kit - FDE Includes Armaspec Enhanced Lower Parts Compatible with most AR-15 lowers Made in the U.S.A. Lifetime warranty AR-15 lower receiver 1x Armaspec SFT 45/90 Safety Selector 1x Bolt Catch 1x...$84.99 -
Out of stock
Strike Industries AR Flip Switch - FDE
$43.95Strike Industries AR Flip Switch - FDE Package includes:- 2x Shaft Screw- 1x 60/90 Shaft- 1x End Cap- 1x Right Side Flip Switch- 1x Left Side Flip Switch Features- Ambidexterous- Ergonomic Shape- Modular Assembly- Strike 60/90 Option Note: Not...$43.95 -
On Sale
SB Tactical SBA4 Adjustable Pistol Brace With Grid Defense Buffer Tube Kit - FDE
Sale: $119.95MSRP: $169.95SBA4 with Grid Defense Buffer Kit - FDE SB Tactical SBA4 Pistol Stabilizing Brace Complete Grid Defense Buffer Tube Assembly Kit Carbine buffer (3 oz) Carbine buffer spring Carbine stock end plate Carbine stock lock ring-castle nutSale: $119.95MSRP: $169.95 -
TIMBER CREEK QD END PLATE - FLAT DARK EARTH
$19.99QD END PLATE - FLAT DARK EARTH Cerakote finish Aircraft grade billet aluminum Made in the USA Accomodates right and left hand shooters Quick Disconnect End Plate replaces the standard AR end plate and adds a mounting point for QD sling swivels.$19.99 -
On Sale
Grid Defense AR-9 80% Lower Receiver Without Fire/Safe Engravings - FDE
Sale: $89.00MSRP: $179.00Grid Defense AR-9 80% Lower Receiver - FDE Finished in Magpul FDE Cerakote Machined from 6061 billet aluminum Compatible with any Glock style small frame pistol calibers Compatible with Glock pattern or style magazines Magazine release button and...Sale: $89.00MSRP: $179.00 -
Out of stock
SKELETONIZED ELITE TRIGGER GUARD - FLAT DARK EARTH
$25.99PREMIUM SKELETONIZED ELITE TRIGGER GUARD - FDE This Skeletonized trigger guard is the premium option from the Vital trigger guard that comes standard with all completed lowers. With it's slim design, it offers coverage where it is needed serving...$25.99 -
Grid Defense Complete Lower Pistol Build Kit - FDE
$109.99Ghost Firearms Complete Lower Pistol Build Kit - FDE FDE Cerakote Trigger Group FDE Cerakote A2 Grip Buffer Retainer Pin Buffer Retainer Spring Trigger Guard Safety Selector Bolt Catch Spring Detent...$109.99 -
GRID DEFENSE MIL-SPEC LOWER PARTS KIT WITH MAGPUL MOE K FDE GRIP
$99.99GRID DEFENSE MIL-SPEC LOWER PARTS KIT WITH MAGPUL MOE K FDE GRIP This complete lower parts kit includes all the components needed to build out your lower receiver minus the buffer tube assembly. Includes: Magpul MOE K FDE Grip Magpul MOE Trigger...$99.99 -
MIL-SPEC PISTOL BUFFER TUBE - FDE
$25.00MIL-SPEC PISTOL BUFFER TUBE - FDE Made From: Forged 7075 aluminum FDE Cerakote Finish **Buffer, Castle Nut, End Plate Not Included**$25.00 -
Out of stock
HEXMAG AR15 ADVANCED TACTICAL GRIP - FDE
$29.99HEXMAG AR15 ADVANCED TACTICAL GRIP - FDE Fits AR-15 and AR-10 platforms 17 for pistols/SBRs" 25 degree for standard angle or 33 degree for long range Made from fiber-reinforced polymer HexMag's AR-15 Advanced Tactical Pistol Grip features a...$29.99 -
Out of stockOn Sale
SB Tactical SBA5 Adjustable Pistol Brace With Grid Defense Buffer Tube Kit - FDE
Sale: $119.95MSRP: $169.95SBA5 with Grid Defense Buffer Kit - FDE SB Tactical SBA5 Pistol Stabilizing Brace Complete Grid Defense Buffer Tube Assembly Kit Carbine buffer (3 oz) Carbine buffer spring Carbine stock end plate Carbine stock lock ring-castle nutSale: $119.95MSRP: $169.95 -
STRIKE INDUSTRIES FANG BILLET TRIGGER GUARD - FDE
$21.95STRIKE INDUSTRIES FANG BILLET TRIGGER GUARD - FDE Contents:- 1x Aluminum Trigger Guard- 4x M3 Hex Screw- 1x Warning card Features:- Aircraft grade aluminum construction- Magazine reload assist- Cleaner, faster reloads- Lightweight (.4 oz with...$21.95 -
B5 Systems Medium Length Collapsible Precision Stock - FDE
$230.00B5 Systems Medium Length Collapsible Precision Stock - FDE Adjustable cheekweld and buttpad with precision dials. Mounting slots for Accessory Cheekpiece. 12 internal tensioners. Color matched machined hardware. Fixed sling mounts. Steel...$230.00 -
Out of stock
Bravo Company Gunfighter's Grip Mod3 - FDE
$20.00Bravo Company BCMGUNFIGHTER Grip Mod3 - FDE Fits AR rifles Reduced angle for improved ergonomics Hinged trap door offering storage inside the grip Up to 1/4" wider than Mod 0 and Mod 1$20.00 -
Out of stock
Ergo MSR Compact AR-15 Pistol Grip - FDE
$17.99Ergo MSR Compact AR-15 Pistol Grip - FDE MSR Upgraded Pistol Grip Aggressive Texturing Integral rear upper extension supports the web of the shooters hand Mounting hardware included$17.99