On-Sale Spare AR PartsThe Firearm Blog

Welcome to TFB Web Deals 10. This week we’re talking about spare AR parts. I’ve said it before and I’ll probably keep saying it till the AR-15 is all but an antique – it never hurts to have around a bunch of spare AR parts. Whether your favorite rifle is needing a couple replacement parts, or you’re building a new one and you’ve just launched your second front takedown pin detent across the garage again, spare parts can really save your bacon. So today for TFB Weekly Web Deals 10, we’ll be taking a look at five different on-sale spare AR parts that you can pick up to add to your personal stash.

Previous Weekly Web Deals @ TFB:

TFB Weekly Web Deals 10: On-Sale Spare AR Parts

BROWNELLS – AR-15 LOWER PARTS KIT W/ GEISSELE RAPID-FIRE TRIGGER

Sale Price: $189.99

This 5.56 NATO AR-15 lower receiver parts kit is made of all high quality, Made in the USA, Mil-spec parts. Each part is well made, durable and packaged in color coded bags for easy installation. This kit is an excellent choice for building or rebuilding an AR-15 rifle. Contains: Takedown Pin, Receiver Pivot Pin, Takedown Pin Detent (2), Takedown Pin Detent Spring (2), Bolt Catch, Bolt Catch Plunger, Bolt Catch Spring Pin, Bolt Catch Spring, Buffer Retainer, Buffer Retainer Spring, Magazine Catch, Magazine Catch Spring, Magazine Catch Button, Trigger Guard Assembly, Trigger Guard Pivot Spring Pin, Safety Selector, Selector Detent, Selector Detent Spring, Grip Screw Washer, Grip Screw. Does not contain a pistol grip.

This one has all of your spare detents, springs, and other small easy-to-lose parts in it. Perfect as a gift too for a budding gunsmith. 

TFB Weekly Web Deals 10: On-Sale Spare AR Parts

Pick up the Brownells AR15 Lower Parts Kit for A current sale price of $189.99 from Brownells

AERO PRECISION – AR-15 CARBINE BUFFER KITS

Sale Price: $38.99

With the popularity of short, pistol-length, AR-style firearms on the market, more of today’s AR owners are seeing a phenomenon that occurs on semi-automatic firearms with short gas systems: overgassing. The result of overgassing is increased wear on internal components, as well as increased felt recoil. To address these issues, Aero Precision launched its AR-15 Carbine Buffer Kit.

Buffer tubes can get bent, be cracked and buffer springs can be accidentally bent or wear out. Additionally, it’s always nice to have a spare buffer around. Brownells has several different combination buffer kits on sale so be sure to check them out to see which one you think will fit your needs most.

TFB Weekly Web Deals 10: On-Sale Spare AR Parts

TFB Weekly Web Deals 10: On-Sale Spare AR Parts

Pick up the Aero Precision AR-15 Carbine Buffer Kit for $38.99 from Brownells

BROWNELLS – M16 5.56 BOLT CARRIER GROUP NITRIDE MP

Sale Price: $79.99

  • Bolt is made from 9310 hardened steel, shot peened and magnetic particle inspected
  • Carrier is machined from 8620 hardened steel
  • Extractor is machined  from 4340 steel and includes mil-spec extractor spring and black o-ring
  • Gas Key is machined from 4130 steel and attached with Grade 8 screws, that are properly staked into a milled “valley” to ensure proper positioning
  • Cam Pin is machined from hardened 4340 steel
  • Firing Pin is made from 8740 steel, center-less ground and hard chrome coated
  • Magnetic-particle inspected Bolt
  • Extractor includes spring and rubber insert
  • Includes torqued and staked gas key
  • Functions with any cartridge based on the 5.56 NATO cartridge case
TFB Weekly Web Deals 10: 5 On-Sale Spare AR Parts

TFB Weekly Web Deals 10: On-Sale Spare AR Parts

Pick up the Brownells M16 5.56 Bolt Carrier Group For $79.99 at Brownells

AERO PRECISION – AR-15 LOWER PARTS KIT

Sale Price: 28.99

All the small parts without the fire control group, pistol grip, or trigger guard.

  • Takedown/pivot Spring
  • Takedown/pivot detent
  • Takedown pin
  • Pivot pin
  • Bolt Catch
  • Bolt Catch Spring
  • Bolt Catch buffer
  • Bolt catch roll pin
  • Safety Selector
  • Safety Selector spring
  • Safety Selector detent
  • 4-40 Set Screw (for threaded takedown pin detent hole)
  • Buffer retainer
  • Buffer retainer spring
  • Magazine catch body
  • Magazine catch spring
  • Magazine catch button
TFB Weekly Web Deals 10: 5 On-Sale Spare AR Parts

TFB Weekly Web Deals 10: On-Sale Spare AR Parts

Pick up the Aero Precision AR15 Lower Parts Kit for $28.99 from Brownells

BROWNELLS – AR-15/M16 ARMORER’S SMALL PARTS KIT

Sale Price: $539.99 (Reduced from $629.99)

Designed for the armorer or gunsmith who services a lot of ARs! This extensive kit includes the key small components for both the upper and lower receiver to keep your customers’, department’s, or agency’s AR-15s ready for action. Also great for doing multiple builds as well as for replacing parts that have been damaged in use or been lost during installation. Handy insurance to make sure you always have a replacement part when you need one.

TFB Weekly Web Deals 10: 5 On-Sale Spare AR Parts

TFB Weekly Web Deals 10: On-Sale Spare AR Parts

Pick up the Brownells AR-15/M16 Armoer’s Small Parts Kit for $539.99 from Brownell’s


That’s all we’ve got for this week folks! I hope you found some of these items helpful. What are some other spare AR parts that you usually keep on hand as replacements or for your next build? Let us know down in the comments!



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