Parts
Our amazing offer consists of a great variety of AR-10, AR-15, and pistol parts and accessories. Purchase upper receivers, muzzle devices, handguards, BCG, barrels, triggers, magazine extensions, etc., and start modifying your firearm today.
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Firearm parts
Rainier Arms is the best place to purchase parts and accessories for your rifle or pistol online, and all that for more than affordable prices. Look no further, you can find here everything that comes to your mind and more! The best manufacturers in the business, like Killer Innovations, Lantac, Next Level Armament, Rainier Arms LLC, Apex Tactical Specialties, and many more are here to offer you their high-quality products. Select your preferred part and make your AR-10, AR-15 or pistol a unique piece of firearm.
- Manufacturer Tyrant Designs Remove This Item
- Glock 17 9 items
- Glock 19 14 items
- Glock 19X 2 items
- Glock 22 7 items
- Glock 23 9 items
- Glock 24 2 items
- Glock 26 8 items
- Glock 27 7 items
- Glock 31 7 items
- Glock 32 7 items
- Glock 33 7 items
- Glock 34 8 items
- Glock 35 7 items
- Glock 37 6 items
- Glock 38 6 items
- Glock 39 6 items
- Glock 43 5 items
- Glock 43X 5 items
- Glock 45 3 items
- Glock 48 5 items
- H&K VP9 1 item
- Sig P320 8 items
- Sig P365 5 items
- Sig P365XL 1 item
- Sig P365 X-Macro 1 item
- S&W M&P Shield 2 items
- Springfield Hellcat 2 items
- Backplate 1 item
- Basepad 1 item
- Compensator 7 items
- Extended Slide Stop 2 items
- Handgun Barrel 2 items
- Handgun Sights 2 items
- Magazine Extension 2 items
- Magazine Release 8 items
- Magwell 8 items
- Pistol Accessory 4 items
- Pistol Part 2 items
- Slide Plate 5 items
- Take Down / Pivot Pins 1 item
- Trigger 5 items
What are the most common barrel thread patterns for pistols and rifles?
For .22LR, .22MAG, .17HMR, 9mm, and .223/5.56 NATO the most common thread pattern would be 1/2x28, with some exceptions for 9mm and .223/5.56 NATO firearms. As for .308/7.62mm and .338 Lapua Magnum, the thread pattern that is most commonly used is 5/8x24, with a few exceptions. Another typical thread pattern is 9/16x24 and it is mostly used for .40 S&W weapons.
Single triggers or two-stage triggers?
Whichever you choose, you cannot go wrong. The single trigger is fast and simple to use; as soon as you apply a small amount of pressure, the firearm goes off. Two-stage trigger is extremely accurate and you know precisely when the shot is going to be fired. The first stage prepares you for the second one, when the trigger pushes the hammer up causing the firearm to discharge. So, it is up to you to make a choice.
