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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TIMBER CREEK AR EXTENDED MAGAZINE RELEASE - PURPLE ANODIZED
$19.99AR EXTENDED MAGAZINE RELEASE - PURPLE Compatible with all variances of the AR platform Manufactured by Timber Creek Outdoors Aircraft grade billet aluminum Purple Anodized Finish$19.99 -
Out of stock
TIMBER CREEK AR EXTENDED MAGAZINE RELEASE - RED
$19.99AR EXTENDED MAGAZINE RELEASE - RED Made in the USA Red Anodized Finish Compatible with all mil-spec lowers Manufactured by Timber Creek Outdoors Inc.$19.99 -
Out of stock
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - ORANGE
$23.99AR OVERSIZED TRIGGER GUARD - ORANGE Anodized Orange finish Made in the USA Provides more space Aircraft grade billet aluminum$23.99 -
Out of stock
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - RED
$23.99Timber Creek Oversized Trigger Guard - AR OVERSIZED TRIGGER GUARD - RED Replacement Trigger Guard AR Trigger Guard Red Anodized Lightweight Manufactured by Timber Creek Outdoors, Inc.$23.99 -
Out of stock
TIMBER CREEK AR TAKEDOWN PIN SET - PURPLE
$19.99AR TAKEDOWN PIN SET - PURPLE Replacement pin set Made in the USA Anodized finish Machined from billet aluminum These CNC machined pins are drop in replacements for Mil-Spec lowers and allow easier disassembly of your rifle...$19.99 -
AR Platform Anti-Walk Pins - Stainless Steel
$11.99AR Platform Anti-Walk Pins - Stainless Steel CNC Machined for Precision Material: Stainless Steel Rod & Screws Standard .156 Diameter Pin Package includes: 2 Allen Keys, 2 pins and 4 Screws Weight 0.1 oz$11.99 -
On Sale
Magpul ACS-L Carbine Stock Mil-Spec - Black
Sale: $76.95MSRP: $84.95Magpul Acs-l Stock Made in the USA 0.30" Rubber Butt Pad offers an Anti-Slip Surface Storage Compartment in Tail of Stock with Positive Latching Access Door on Right Hand Side Two Water Resistant Battery Storage Tubes Located on the Left and Right...Sale: $76.95MSRP: $84.95 -
Magpul MOE K-2 AR Pistol Grip - OD Green
$20.95Magpul MOE K-2 AR Pistol Grip - OD Green 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 -
Out of stock
Phase5 Hex-2 AR15 Pistol Buffer Tube
$59.95Phase5 Hex-2 AR15 Pistol Buffer Tube Specifically Designed to Fit Sig SB15 Stabilizing Brace Includes Castle Nut, End Plate and Foam Pad Black Finish Compatible with Milspec AR15/M4 Receivers Made in the USA$59.95 -
Out of stock
RADIAN WEAPONS AR15 AMBIDEXTROUS TALON SAFETY SELECTOR 2-LEVER KIT - RED
$59.95AMBI TALON SAFETY SELECTOR 2-LEVER KIT - RED The Talon™ ambidextrous safety selector is a modular design that can be installed as a standard 90° or as a 45° short throw by simply rotating the shaft 180° inside the lower receiver...$59.95 -
Out of stock
AR Ambidextrous Safety Selector
$20.99AR Ambidextrous Safety Selector Ambidextrous Safety Selector Fits AR 5.56/.223 CNC Machined out of Aircraft Grade Aluminum Mil-Spec Finish: Black Anodized Weight: .5 oz Choose between 45 degree short throw and 90 degree...$20.99 -
Armaspec SMB Buffer Kit Gen 3 H2
$95.99Armaspec SMB Buffer Kit Gen 3 H2 SMB-H2 Buffer, 4.7oz Includes SMB Buffer, Buffer Tube, Endplate and Castle Nut Fits AR-15 Pattern Firearms$95.99 -
Battle Arms Development EMMR Large Enhanced Modular Magazine Release - Red
$23.95Battle Arms Development EMMR Large Enhanced Modular Magazine Release - Red BAD-EMMR-L (Enhanced Modular Magazine Release - Large Finger Pad) for the AR15/AR10. Precision CNC Machined for billet 7075-T6 Aluminum, the BAD-EMMR features,...$23.95 -
BATTLEARMS 3 Piece Enhanced Lower Parts Kit
$35.00BATTLEARMS 3 Piece Enhanced Lower Parts Kit Enhanced Bolt Catch (BAD-EBC-IC), which is a cost-friendly alternative, without sacrificing the quality for your AR build! The AR-15 Cast Enhanced Bolt Catch is 8620 heat treated cast steel with a manganese...$35.00 -
On Sale
Grid Defense AR-10 80% Billet Lower Receiver Without Fire/Safe - Blue Titanium
Sale: $100.00MSRP: $250.00Grid Defense AR-10 80% Lower Receiver Without Fire/Safe - Blue Titanium Machined from 6061-T6 Billet Aluminum Made in house in the USA Flared and Broached Magwell Finished in Blue Titanium Cerakote Does not have Fire/Safe Makings Compatible with...Sale: $100.00MSRP: $250.00 -
Out of stockOn Sale
Grid Defense AR-15 80% Lower Receiver Without Fire/Safe Engravings 5 Pack - Raw
Sale: $200.00MSRP: $600.00Grid Defense AR-15 80% Lower Receiver 5 Pack - Raw Includes 5 Raw No Fire/Safe 80% Lower Receivers Machined from 7075 Forged Aluminum Made in house in the USA Flared and Broached Magwell Raw Aluminum Finish Does not have Fire/Safe Makings Can be...Sale: $200.00MSRP: $600.00 -
Grid Defense Pistol Stabilizing Fin - OD Green
$49.99Grid Defense Pistol Stabilizing Fin - Blue Titanium -Constructed from Reinforced Polymer -Increases Weapon Control and Stability -Weighs 5.7oz -Fits Pistol Buffer Tube up to 1.25" (Not Included) -Finished in OD Green Cerakote$49.99 -
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 -
Magpul ACS Carbine Stock - Black
$89.95Magpul ACS Carbine Stock Compatible with Milspec Carbine Buffer Tube Dual Water Resistant Battery Storage Tubes Integral Storage Compartment Anti Snag Release Latch Friction Lock System to Minimize Stock Movement 0.30" Thick Butt Pad Made in the...$89.95 -
Magpul Aluminum Enhanced Trigger Guard
$19.95Magpul Aluminum Enhanced Trigger Guard Drop in Replacement for AR15/M4 V Shape for better use of gloves Non-Folding Magpul Trigger Guard Rounded Edges All Mounting Hardware Included Machined from Aluminum Made in the USA$19.95