Bushmaster Lower Receiver Parts




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*Individual Lower Receiver Parts
Price: $0.00
Part No: INVD LOWER PARTS
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MagPul Enhanced Aluminum Trigger Guard for AR15/M16
A drop-in oversized trigger guard that replaces the standard plastic or metal type, this hard anodize finished piece offers greater access to the trigger (especially when using gloves), reduces chance of accidental discharge, and fills the blister causing gap between the receiver tabs. Installs with a replacement roll pin and a 1/16" Allen Head set screw. Made in U.S.A. / Instructions included.
Price: $21.63
Part No: F1001533
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*M16 A2 Three Shot Burst Set
Installation of this set in your M16A1 machine gun will give you a Three ShotBurst capability as in the M16A2. New, highest quality parts. An FFL is required for sale, or a copy of your Form 4. Not legal for installation in anything but a licensed machine gun.

*M16 Parts are NOT Legal for Sale in California.
Price: $67.98
Part No: F1000617
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*M16 Full Auto Sear
Includes Pivot Pin, Bushing and Spring.

Note: An FFL or Tax Stamp is required for purchase. *NOTE: M16 Parts are NOT Legal for Sale in California.
Price: $33.99
Part No: F1003064
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Ambidextrous Magazine Release
Now, release magazines from either side of the receiver - especially handy for lefties. This well made assembly is an easy replacement for your stock magazine release - uses stock button and spring. No receiver modification is required, the design reduces the possibility of accidental release, and helps keep out sand and mud. All steel construction with a mil. spec. manganese phosphate finish. Made in U.S.A.
Price: $101.97
Part No: F1003101
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Anti-Walk Pins for XM15, AR15, M16
Designed to prevent trigger or sear pin walkout under rapid fire conditions. Steel with black phosphated finish.
Price: $7.21
Part No: F1002129
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AR15 Ambidextrous Safety Selector
Don't be penalized for being left handed any longer. Installs easily into your lower receiver and enables activation of the rifle with either hand. Assembles with a button head Allen Screw.

Price: $40.17
Part No: F1005176
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AR15 Rehab Kit
Hammer, Trigger, Safety Selector and Disconnector.

Options: Semi-Auto or Full-Auto

Note: An FFL or Tax Stamp is required for purchase. *NOTE: M16 Parts are NOT Legal for Sale in California.
Price: $39.14
Part No: F1003664
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AR15/M16 Accu-Wedge
Accu-Wedge eliminates play between Upper and Lower Receivers for a more solid feel. Buffers the cycling system to reduce wear on the impacting surfaces. Easily installed, no modifications required. Drop the Accu-Wedge into the rear of the Lower Receiver - close the Upper Receiver, squeeze, and push the Takedown Pin into place
Price: $7.21
Part No: F1000946
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Bushmaster Receiver Spring Package
Tighten your Receiver's action with this top quality Spring Kit. Includes Springs for Hammer; Trigger, Ejector, Extractor, Magazine Catch and Disconnector.
Price: $4.12
Part No: F1005608
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Bushmaster Two Stage Competition Trigger
This finely honed competition trigger (8448592-SCGK) includes all the specially modified parts shown plus instructions - ready for installation in your lower receiver. This trigger can be set for a 3 1/2 lb. DCM legal 1st Stage and a 1 lb. (2nd Stage) letoff. NOTE: This Trigger will not fit in Colt Lowers with a "Block" over the Safety, and is not designed to work with large Colt pivot pins.
Price: $135.96
Part No: F1003056
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Complete AR15 Spare Parts Kit w/ Rifle Buffer
We've taken our Field Repair Kit, our Complete Spring Package, and our Complete Pin & Detent Package and combined them into one "super-kit" that will take care of all your AR15 rifle's spare parts needs. You'll get all these parts and more: every Spring in the Gun (including Buffer Spring); Firing Pin; 3 Firing Pin Retaining Pins; Cam Pin; Disconnector; Extractor; Extractor Pivot Pin; 2 Extractor Spring Inserts; Gas Ring Set; 2 Hammer & Trigger Pins; 2 Front Sight Taper Pins; 2 Takedown Pin Detents; Safety Detent; Bolt Catch Plunger; Gas Tube Roll Pin; Front Sight Detent; Ejector Pin; Forward Assist Pin; Bolt Catch Pin; Buffer Detent; Trigger Guard Pin. This is a great value for only $39.50!

(Note: If you have our Fixed Length Tele-Stock, please choose the Rifle Buffer Spring Package. Not all parts are shown, and not shown to correct scale.)

Options: Rifle or CAR
Price: $42.23
Part No: F1001010
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Complete AR15/M16 Pin & Detent Package
Includes every pin and detent in the gun - a $13 value if sold separately. Contains: 2 Hammer/Trigger Pins; 2 Front Sight Taper Pins; Firing Pin Retaining Pin; 2 Takedown Pin Detents; Safety Detent; Bolt Catch Plunger; Extractor Pin; Gas Tube Roll Pin; Front Sight Detent; Ejector Pin; Forward Assist Pin; Bolt Catch Pin; Buffer Detent; Trigger Guard Pin.
Price: $8.24
Part No: F1000977
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Complete Spring Package
Every spring in the gun, including the Buffer Spring.

Options: Telestock or Standard
Price: $11.33
Part No: F1003611
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Emergency Survival Kit
This Kit includes more parts than our Field Repair Kit above - all packed in a handy Olive Drab Carrying Case you can wear on a belt. Carrying Case measures approximately 9.25" x 3.5" (outside dimensions).

Includes Cam Pin, Extractor with 2 Pins and 2 Springs, Extractor Insert, Firing Pin, 2 Firing Pin Retaining Pins, Disconnector and Spring, Hammer with "J" Pin and Spring, Hammer Pin, Trigger Pin, Trigger Spring, Safety Detent and Spring, Magazine Catch Springs, Gas Rings (3), Sight Adjustment Tool, and 2 Armorers Punches for Field Disassembly.

Specify with part numbers below: A1 Type: (Round Front Sight Post) or A2 Type: (Square Front Sight Post) and AR15 (AR) or M16 (M) parts. (Note: M16 parts require an FFL or Form 4 for purchase.)

Options: A1 AR15, A1 M16 or A2 AR15, A2 M16
Price: $67.98
Part No: F1000976
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Expandable Tensioning Pin for AR15 Type Rifles
Expandable Tensioning Pin for AR15 Type Rifles
Price: $40.17
Part No: F1001012
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Field Repair Kit
High breakage and loss items in a heavy zip-lock bag. Will fit in Stowaway Grip. Includes extractor, 2 extractor springs, 2 extractor spring insert, disconnector, gas ring set, extractor pivot pin, firing pin, 2 firing pin retaining pins, cam pin and spring package of 6 springs.

Options: AR15 or M16

Note: An FFL or Tax Stamp is required for purchase. *NOTE: M16 Parts are NOT Legal for Sale in California.
Price: $33.99
Part No: F1003615
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Individual Lower Receiver Parts for Late Model COLT AR15 Rifle: Disconnector
Disconector - Individual Lower Receiver Parts for Late Model COLT AR15s... These are the hard to find parts for the late model Colts requiring the larger .172" diameter Hammer and Trigger Pins.
Price: $8.00
Part No: F1003095
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Individual Lower Receiver Parts for Late Model COLT AR15 Rifles: 5 Piece Set
For All 5 Parts in a Kit: Hammer; Trigger; Disconnector (Semi-auto); Hammer and Trigger Pins
Price: $56.00
Part No: F1000974
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Individual Lower Receiver Parts for Late Model COLT AR15 Rifles: Hammer or Trigger Pin
Hammer and Trigger Pins - Individual Lower Receiver Parts for Late Model COLT AR15s... These are the hard to find parts for the late model Colts requiring the larger .172" diameter Hammer and Trigger Pins.
Price: $4.12
Part No: F1003068
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Individual Lower Receiver Parts for Late Model COLT AR15 Rifles: Trigger
Trigger - Individual Lower Receiver Parts for Late Model COLT AR15s... These are the hard to find parts for the late model Colts requiring the larger .172" diameter Hammer and Trigger Pins.
Price: $23.69
Part No: F1003052
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Offset Pin
Adapts a Colt Lower Receiver (with large hole) to M16 Forward Assist type Upper Receiver with smaller hole.
Price: $7.21
Part No: F1001670
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The Lost Parts Kit for AR15 Type Rifle
The first problem with AR15 maintenance and gunsmithing work is the little spring or detent that pops out and falls into that black hole under the workbench! This Parts Kit - of all the most critical springs, detents, inserts and pins - will get your gun back to full function in short order.
Price: $14.42
Part No: F1001166
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TOP LOADER TAKE DOWN PIN
Price: $5.15
Part No: F1004243
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Two Stage Trigger
Price: $138.02
Part No: F1002086
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PLEASE NOTE: A Federal Firearms License is REQUIRED for the purchase of any Complete Weapon or Lower Receiver. Your order will not be processed without it. See the Dealer Locator for your nearest Bushmaster Dealer. Any other firearms parts or accessories shown in this website may be purchased directly.