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
TIMBER CREEK AR TAKEDOWN PIN SET - BLACK
$19.99AR TAKEDOWN PIN SET - BLACK Made in the USA Machined from Billet Aluminum Compatible with Milspec AR15/M4 Lower Receivers Anodized Finish These CNC machined pins are drop in replacements for milspec lowers and allow easier disassembly of your...$19.99 -
AR-15 Pistol Buffer Tube Assembly - Burnt Bronze
$35.00PISTOL BUFFER TUBE ASSEMBLY - BURNT BRONZE Made in the USA 1.25" Outer Diameter Machined from 7075-T6 Aluminum End Plate Castle Nut Carbine Buffer Spring Carbine Buffer Finished in Burnt Bronze Cerakote$35.00 -
On Sale
AR-15 Pistol Buffer Tube Assembly - FDE
Sale: $29.99MSRP: $35.00PISTOL BUFFER TUBE ASSEMBLY - FDE Made in the USA 1.25" Outer Diameter Machined from 7075-T6 Aluminum End Plate Castle Nut Carbine Buffer Spring Carbine Buffer Finished in FDE CerakoteSale: $29.99MSRP: $35.00 -
Out of stockOn Sale
DPMS AR-10 Takedown Pin Set - Black
Sale: $4.85MSRP: $9.95DPMS AR-10 Takedown Pin Set - Black Made of high-quality steel Black oxide finish for corrosion resistance Easy to install Compatible with DPMS pattern AR-10/308 rifles Reliable and durable Easy to install Compatible with DPMS pattern AR-10/308...Sale: $4.85MSRP: $9.95 -
Out of stock
ODIN Works AR-15 Adjustable Buffer
$49.00ODIN Works AR-15 Adjustable Buffer Lite Buffer made from Aluminum Weights included for different weight combinations AR15 comes with 3 aluminum, 3 stainless steel and 1 tungsten weights ODIN Works is always looking for new ways to make your build...$49.00 -
Phase5 Weapon Systems Ambidextrous 90 Degree Safety Selector - Black
$45.00Phase5 Weapon Systems Ambidextrous 90 Degree Safety Selector - Black Fits AR-15 and AR-10 / LR-308 6061-T6 Billet Aluminum Ambidextrous Wide Levers$45.00 -
Out of stock
TIMBER CREEK AR EXTENDED MAGAZINE RELEASE - OD GREEN
$19.99AR EXTENDED MAGAZINE RELEASE - OLIVE DRAB GREEN Aircraft grade billet aluminum OD Green Cerakote Finish Made in the USA Manufactured by Timber Creek Outdoors Inc. OD Green Mag Release$19.99 -
Out of stock
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - BURNT BRONZE
$23.99AR OVERSIZED TRIGGER GUARD - BURNT BRONZE Burnt Bronze Cerakote Lightweight 0.4oz Oversized Drop in Trigger Guard Manufactured by Timber Creek Outdoors$23.99 -
Out of stock
TIMBER CREEK AR OVERSIZED TRIGGER GUARD - OD GREEN
$23.99AR OVERSIZED TRIGGER GUARD - OLIVE DRAB GREEN Weight 0.4oz OD Green Extra room around trigger Replacement trigger guard manufactured by Timber Creek Outdoors, Inc$23.99 -
On Sale
Grid Defense AR-10 80% Billet Lower Receiver Without Fire/Safe - OD Green
Sale: $100.00MSRP: $250.00Grid Defense AR-10 80% Lower Receiver Without Fire/Safe - OD Green Machined from 6061-T6 Billet Aluminum Made in house in the USA Flared and Broached Magwell Finished in OD Green Cerakote Does not have Fire/Safe Makings Compatible with DPMS...Sale: $100.00MSRP: $250.00 -
Grid Defense Mil-Spec Carbine Buffer Tube Assembly - Tungsten Gray
$40.00Grid Defense Mil-Spec Carbine Buffer Tube Kit - Tungsten Gray Made in the USA Compatible with M4 Type Butt Stocks 6 Position Carbine Buffer Tube Machined from 7075-T6 Aluminum End Plate Castle Nut Carbine Buffer Spring Carbine Buffer Weight: 9...$40.00 -
Rise Armament Rave Single Stage Trigger with Lower Parts Kit - Black
$180.00Rise Armament Rave Single Stage Trigger with Lower Parts Kit - Black No take-up —Quik-Klik reset you can feel Elementary installation — no set screws to tighten Single stage, 3.5-lb. pull weight Includes anti-walk pins for worry-free...$180.00 -
TIMBER CREEK AR TAKEDOWN PIN SET - BURNT BRONZE
$19.99AR TAKEDOWN PIN SET - BURNT BRONZE Cerakote Finish Made in the USA Machined from billet aluminum Compatible with Milspec M4/AR15 Lower Receivers These CNC machined pins are drop in replacements for Mil-Spec lowers and allow easier...$19.99 -
Out of stock
TIMBER CREEK AR TAKEDOWN PIN SET - OD GREEN
$19.99AR TAKEDOWN PIN SET - OLIVE DRAB GREEN Machined from billet aluminum Cerakote finish Compatible with milspec M4/AR15 Lowers Made in the USA These CNC machined pins are drop in replacements for Mil-Spec lowers and allow easier...$19.99 -
UTG PRO AMIBDEXTROUS AR-15 GRIP - FDE
$16.97UTG PRO AMIBDEXTROUS AR-15 GRIP - FDE Flat dark earth finish Polymer grip with finger grooves Compatible with most ambidextrous safety levers Fits AR-15$16.97 -
Out of stock
Adaptive Tactical Lightweight Tactical Grip - FDE
$17.99Adaptive Tactical Lightweight Tactical Grip - FDE AR-15/M-16/M4 Pistol Grip Constructed from High Grade Reinforced Polymer One Piece Construction Non-Conductive Ergonomic Aggressive Design Lightweight and Durable Improved...$17.99 -
Out of stockOn Sale
Grid Defense AR-15 80% Lower Receiver With Fire/Safe Engravings 5 Pack - Black
Sale: $240.00MSRP: $700.00Grid Defense AR-15 80% Lower Receiver With Fire/Safe Engravings 5 Pack - Black Includes 5 80% Lower Receivers Machined from 7075-T6 Aluminum Forging 8625 Type III Hardcoat Anodize – Black Flared and broached magazine well Rear upper lug...Sale: $240.00MSRP: $700.00 -
Magpul MOE K-2 AR Pistol Grip
$20.95Magpul MOE K-2 AR Pistol Grip Weight: 2.9oz Thickness: 1.2" Height: 4.1" Grip Angle: 17 Degrees Compatible With: AR15, AR10, M16, M4, M110, SR25$20.95 -
STRIKE INDUSTRIES MAGAZINE CATCH - RED
$20.95STRIKE INDUSTRIES MAGAZINE CATCH - RED Enhanced Magazine Catch: Steel 6061-T6 Aluminum Release Button Solid Billet Aluminum Construction Unique Anodized Colors Red Finish$20.95 -
TIMBER CREEK AMBIDEXTROUS SAFETY SELECTOR - FLAT DARK EARTH
$39.99AMBIDEXTROUS SAFETY SELECTOR - FDE Flat dark earth Made in the USA Variety of Colors Manufactured by Timber Creek Outdoors$39.99