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.
- Price $0.00 - $99.99 Remove This Item
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- Aeroknox 1 item
- Apex Tactical Specialties 6 items
- ARC Division 2 items
- Armaspec 1 item
- Arms Republic 1 item
- Battle Arms Development 3 items
- Devil Dog Concepts 3 items
- DPM Systems Technologies 5 items
- Faction 1 item
- Faxon Firearms 1 item
- Griffin Armament 1 item
- Handleitgrips 1 item
- Kagwerks 1 item
- Killer Innovations 6 items
- L2D Combat 1 item
- Lantac 4 items
- Magpul Industries 3 items
- NIGHT FISION 6 items
- Nomad Defense 1 item
- Polymer80 1 item
- Rainier Arms, LLC 4 items
- Reptilia Corp 1 item
- Sprinco (Tactical Springs) 5 items
- Strike Industries 4 items
- Tyrant Designs 26 items
- ZEV Technologies 1 item
- Glock 17 29 items
- Glock 19 32 items
- Glock 19X 5 items
- Glock 20 3 items
- Glock 21 3 items
- Glock 22 17 items
- Glock 23 18 items
- Glock 24 6 items
- Glock 25 4 items
- Glock 26 13 items
- Glock 27 12 items
- Glock 28 2 items
- Glock 29 2 items
- Glock 30 2 items
- Glock 31 16 items
- Glock 32 14 items
- Glock 33 11 items
- Glock 34 19 items
- Glock 35 15 items
- Glock 36 2 items
- Glock 37 12 items
- Glock 38 10 items
- Glock 39 9 items
- Glock 40 2 items
- Glock 41 2 items
- Glock 42 1 item
- Glock 43 9 items
- Glock 43X 8 items
- Glock 44 2 items
- Glock 45 6 items
- Glock 48 7 items
- Sig P320 1 item
- Backplate 1 item
- Basepad 3 items
- Compensator 10 items
- Extended Slide Stop 1 item
- Firing Pin 1 item
- Grip Accessory 1 item
- Guide Rod 10 items
- Handgun Barrel 1 item
- Handgun Sights 3 items
- Magazine Accessory 1 item
- Magazine Extension 3 items
- Magazine Release 5 items
- Magwell 15 items
- Parts Kit 1 item
- Pistol Accessory 4 items
- Pistol Part 8 items
- Pistol Sights 5 items
- Recoil Spring 1 item
- Sight Post 1 item
- Slide Parts Kit 3 items
- Slide Plate 5 items
- Trigger 4 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.
