Lower Parts
Build or upgrade your rifle with quality AR-15 lower parts from Gas & Brass Armory in Brandon, FL. We offer complete lower parts kits (LPKs), individual components, upgraded triggers, buffer retainers, takedown pins, and more. Whether you’re doing a full lower build or fine-tuning your trigger and controls, we carry reliable parts from Aero Precision, CMC, Rise Armament, and other trusted brands. Everything you need to finish your lower, all in one place.
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B5 TRIGGER GUARD BLK
B5 Systems
MSRP: $31.35$19.00The B5 Systems Bravo trigger guard offers a drop in upgrade over the standard AR trigger guard. The enlarged profile allows for glove use in cold weather or tactical operation. The trigger guard also maintains the original swing down function for use...MSRP: $31.35$19.00 -
B5 END PLATE BLK
B5 Systems
MSRP: $31.35$19.00The B5 Systems Quick Disconnect End Plate provides users with an alternative attachment point for single point sling use. The limited rotation one piece steel construction allows for proper staking and a lifetime of service. The milspec manganese...MSRP: $31.35$19.00 -
ADV TECH AR15 CASTLE NUT
ATI Outdoors
MSRP: $12.47$8.00High quality components and precise manufacturing make Advance Tech parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on.MANUFACTURER: ATI...MSRP: $12.47$8.00 -
ADV TECH AR15 GRIP SCREW/WASHER
ATI Outdoors
MSRP: $4.64$3.00This grip screw set can be used for a new build or as a replacement for that frustrating OEM flat head screw. It comes with a steel 1/4-28 x 1" Hex bolt and a steel star washer.MANUFACTURER: ATI OutdoorsMPN: A.5.10.2548MODEL: 0Description: AR Pistol Grip...MSRP: $4.64$3.00 -
ADV TECH LOP QUICK STOP
ATI Outdoors
MSRP: $22.51$14.00High quality components and precise manufacturing make Advance Tech parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on.MANUFACTURER: ATI...MSRP: $22.51$14.00 -
NOVESKE QUICK DETACH END PLATE BLK
Noveske
MSRP: $41.64$0.00Carbine Receiver End Plate with QD Sling Swivel Attachment made by Noveske.MANUFACTURER: NoveskeMPN: 05000094MODEL: Quick Detach MountDescription: Quick DetachType: MountColor: BlackMSRP: $41.64$0.00Qty in Cart: 0Quantity:Price:MSRP: $41.64$0.00Subtotal: -
WMD ACCENT BUILD KIT 556 RED
WMD Guns
MSRP: $207.90$0.00The color coated parts included are: Ejection Port Cover Door, Forward Assist, Castle Nut, Receiver End Plate, Bolt Catch, Mag Lever, Mag Button, Pivot Pin, Takedown Pin, Trigger Guard, Buffer Retainer. Also includes the pins and spring kit for the Lower...MSRP: $207.90$0.00Qty in Cart: 0Quantity:Price:MSRP: $207.90$0.00Subtotal: -
WMD ACCENT BUILD KIT 556 FDE
WMD Guns
MSRP: $207.90$0.00The color coated parts included are: Ejection Port Cover Door, Forward Assist, Castle Nut, Receiver End Plate, Bolt Catch, Mag Lever, Mag Button, Pivot Pin, Takedown Pin, Trigger Guard, Buffer Retainer. Also includes the pins and spring kit for the Lower...MSRP: $207.90$0.00Qty in Cart: 0Quantity:Price:MSRP: $207.90$0.00Subtotal: -
WMD ACCENT BUILD KIT 556 NIB-X
WMD Guns
MSRP: $137.34$0.00Spice up your favorite AR-15 with WMD's NiB-X coating accent parts kit. Featuring nickel boron coating to provide long life, high reliability and easy cleaning and maintenance. These parts are designed to last!MANUFACTURER: WMD GunsMPN:...MSRP: $137.34$0.00Qty in Cart: 0Quantity:Price:MSRP: $137.34$0.00Subtotal: -
TPS AR-15 QUICK REPAIR KIT
TPS Arms
MSRP: $16.57$0.00High quality components and precise manufacturing make TPS Arms parts ideal for maintaining and upgrading firearms. The durability, reliability and excellent build quality of these parts will ensure years of service you can count on.MANUFACTURER: TPS...MSRP: $16.57$0.00Qty in Cart: 0Quantity:Price:MSRP: $16.57$0.00Subtotal: -
SYLVAN AR15 FLARED MAGWELL BLACK
Sylvan Arms
MSRP: $61.59$0.00The Sylvan Arms Flared Magwell allows no-look, faster loading of magazines. With integral trigger guard, and wider flare than competing products, the Sylvan Arms Flared Magwell outperforms any other magwell available on the market today.MANUFACTURER:...MSRP: $61.59$0.00Qty in Cart: 0Quantity:Price:MSRP: $61.59$0.00Subtotal: -
STRIKE AR ANTI-WALK PINS BLK
Strike Industries
MSRP: $24.67$0.00The SI Anti-Walk/Anti-Rotation Pin Set is a fantastic piece of hardware that adds an extra degree of security to prevent your trigger pins from walking out under fire or harsh use.MANUFACTURER: Strike IndustriesMPN: SI-AR-AWPMODEL: 0Description: Ultra...MSRP: $24.67$0.00Qty in Cart: 0Quantity:Price:MSRP: $24.67$0.00Subtotal: