Firearms
Rainier Arms provide a large choice of rifles, shotguns, handguns, Bolt Action, AK rifles, and AR pistols. Find, compare, and shop your favorite. In our offer, you can find firearms from manufacturers like Daniel Defense, Kalashnikov USA, Nighthawk Custom, and many many more. In case you run out of ammo, you can browse and purchase ammo for your firearm.

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Wilson Combat WCP320 Full 9mm Pistol w/ Action Tuned Straight Trigger - Tan★ ReviewsPopup content startsclose Popup
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from real shoppers4.8 star rating 30518 Reviews- Site Reviews
- Product Reviews
Thank you for posting a review!We value your input. Share your review so everyone else can enjoy it too.Thank you for posting a review!Your review was sent successfully and is now waiting for our staff to publish it.Verified Reviewer0.0 star rating05/03/25JJeffVerified Buyer5.0 star rating05/03/25Very accurateReview by Jeff on 3 May 2025 review stating Very accurateI have around 150 rounds on this barrel so far and it is very accurate. I am getting sub moa 5 shot groups with 77gr match ammo and just over an inch with the 55gr fmj PMC XTac. I own several of these Ultra Match barrels and they are all super accurate. You will not regret buying one of these barrels.On Rainier Arms Ultramatch MOD2 .223 Wylde AR-15 Barrel - 13.9" NitrideLLeo L.Verified Buyer5.0 star rating05/03/25One of the coolest looking trigger guardsReview by Leo L. on 3 May 2025 review stating One of the coolest looking trigger guardsNothing much to say other than it works and fits perfectly. Looks cool with the little knight logo and looking cool at the range is what matters.On Knight's Armament Company (KAC) AR-15 Combat Trigger GuardДДобриVerified Reviewer5.0 star rating05/03/25Нещо от завод 10Review by Добри on 3 May 2025 review stating Нещо от завод 10Абе пиндоси, откога АРСЕНАЛ - завода в Казанлък, България е в Лас Вегас ? А ? М ? Просто кажете, че българския ,,Калашник" е най-добрия в света и като такъв го продавате толкоз скъпо !!!On Arsenal SAS M7-34 Classic Under Folder 7.62x39 AK-47 Rifle - 16.3" GrayPPaul A.Verified Buyer5.0 star rating05/02/25SweetReview by Paul A. on 2 May 2025 review stating SweetExcellent addition to the FCD ambi-mag release.On Forward Controls Design Enhanced Magazine Release (Blind Hole)PPaul A.Verified Buyer5.0 star rating05/02/25This release has just theReview by Paul A. on 2 May 2025 review stating This release has just theThis release has just the right amount of surface and grip for the perfect magazine release. It's worth every penny.On Forward Controls Design EMR-A Enhanced Magazine Release Ambidextrous-StandardSpecial Price $999.92 Regular Price $1,425.00 -
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Wilson Combat WCP320 Full 9mm Pistol w/ Action Tuned Straight Trigger - Black5.0 star rating 6 Reviews$1,425.00
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Battle Arms Development Workhorse 5.56 NATO Pistol - 10.5" Anodized Black5.0 star rating 3 ReviewsSpecial Price $749.99 Regular Price $1,199.00
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Zev Technologies AR-15 Core Duty Rifle - 16"4.0 star rating 1 ReviewSpecial Price $999.92 Regular Price $1,564.00
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Riley Defense RAK-47-C-L 7.62x39 Rifle - Classic Laminate 16.25"4.7 star rating 3 ReviewsSpecial Price $849.00 Regular Price $1,019.00
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CITADEL KATAC 12 Gauge Semi Auto Shotgun - 20"5.0 star rating 6 ReviewsSpecial Price $175.00 Regular Price $349.00
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Shopping Options
Barrel Length
- 2" 3 items
- 2.5" 1 item
- 2.75" 1 item
- 3.0" 11 items
- 3.1" 16 items
- 3.18" 1 item
- 3.25" 6 items
- 3.27" 1 item
- 3.3" 1 item
- 3.39" 1 item
- 3.41" 10 items
- 3.43" 1 item
- 3.5" 16 items
- 3.54" 1 item
- 3.6" 5 items
- 3.66" 1 item
- 3.7" 11 items
- 3.75" 2 items
- 3.8" 4 items
- 3.85" 4 items
- 3.9" 35 items
- 3.94" 1 item
- 4" 36 items
- 4.01" 1 item
- 4.02" 11 items
- 4.09" 2 items
- 4.1" 1 item
- 4.17" 6 items
- 4.20" 1 item
- 4.25" 57 items
- 4.3" 7 items
- 4.32" 1 item
- 4.4" 18 items
- 4.45" 2 items
- 4.46" 1 item
- 4.48" 2 items
- 4.49" 8 items
- 4.5" 21 items
- 4.53" 1 item
- 4.57" 1 item
- 4.6" 18 items
- 4.61" 1 item
- 4.7" 24 items
- 4.71" 1 item
- 4.78" 1 item
- 4.8" 13 items
- 4.89" 3 items
- 4.9" 4 items
- 4.925" 1 item
- 4.94" 1 item
- 5" 103 items
- 5.09" 1 item
- 5.1" 3 items
- 5.19" 2 items
- 5.2" 1 item
- 5.28" 2 items
- 5.3" 2 items
- 5.31" 2 items
- 5.4" 5 items
- 5.5" 12 items
- 5.51" 1 item
- 5.8" 2 items
- 5.87" 1 item
- 6" 9 items
- 6.02" 1 item
- 6.5" 4 items
- 6.88" 2 items
- 7" 5 items
- 7.5" 3 items
- 7.72" 1 item
- 7.75" 3 items
- 7.8" 1 item
- 7.94" 1 item
- 8" 17 items
- 8.3" 2 items
- 8.5" 5 items
- 8.86" 2 items
- 8.9" 1 item
- 9" 3 items
- 9.5" 1 item
- 9.6" 1 item
- 9.75" 2 items
- 10" 2 items
- 10.3" 9 items
- 10.5" 13 items
- 11" 5 items
- 11.5" 12 items
- 11.75" 4 items
- 12" 2 items
- 12.5" 4 items
- 13" 5 items
- 13.7" 6 items
- 13.75" 2 items
- 13.9" 1 item
- 14" 1 item
- 14.17" 2 items
- 14.3" 1 item
- 14.5" 17 items
- 15.14" 1 item
- 16" 97 items
- 16.1" 11 items
- 16.17" 2 items
- 16.2" 1 item
- 16.25" 20 items
- 16.3" 5 items
- 16.33" 3 items
- 16.5" 28 items
- 17.4" 2 items
- 18" 20 items
- 18.43" 1 item
- 18.5" 31 items
- 19.1" 4 items
- 19.75" 1 item
- 20" 12 items
- 20.8" 1 item
- 22" 6 items
- 24" 10 items
- 26" 6 items
- 28" 3 items
Caliber
- .22 ARC 1 item
- .22 Cal 4 items
- .22 LR 37 items
- .22 WMR 1 item
- .223/5.56 2 items
- .223 Rem 1 item
- .223 Wylde 19 items
- .30-30 3 items
- .30 Cal 17 items
- .300 PRC 1 item
- .300 Win Mag 2 items
- .308 11 items
- .308 Win 12 items
- .32 ACP 1 item
- .338 1 item
- .357 Magnum 27 items
- .36 Cal 2 items
- .38/.357 Magnum 7 items
- .38 Special 1 item
- .380 ACP 2 items
- .380 Auto 2 items
- .40 S&W 3 items
- .410 1 item
- .44 Magnum 10 items
- .45-70 GOVT 1 item
- .45 ACP 43 items
- .45 Colt 7 items
- .46 Cal 1 item
- 10mm 13 items
- 12 Gauge 48 items
- .360 1 item
- 300 Blackout 26 items
- 300 Norma Mag 1 item
- 338 Lapua 1 item
- .460 1 item
- 45-70 Gov't 2 items
- 50 Cal 1 item
- 5.45x39 6 items
- 5.56X45 11 items
- 5.56 NATO 126 items
- 5.56mm 22 items
- 5.7x28mm 8 items
- 6mm ARC 4 items
- 6.5 Creedmoor 15 items
- 6.5 PRC 1 item
- 6.8x51 3 items
- 7.62mm 17 items
- 7.62x39 35 items
- 7.62x51 13 items
- 7mm-08 Rem 1 item
- 8.6 Blackout 7 items
- 9mm 526 items
Category
Configuration
Finish
Gas System
Magazine Capacity
Manufacturer
- 21st Tec 8 items
- Advanced Armament Company (AAC) 5 items
- Aero Precision 4 items
- Agency Arms 2 items
- Andro Corp Industries 1 item
- Angstadt Arms 3 items
- AREX Defense 11 items
- Arsenal 8 items
- Atlas Gunworks 11 items
- Brügger & Thomet (B&T) 14 items
- Battle Arms Development 4 items
- Benelli 24 items
- Beretta 25 items
- Black Rain Ordnance 12 items
- BOE Suppression 3 items
- Bravo Company MFG (BCM) 5 items
- Bul Armory 21 items
- Canik 7 items
- Centurion Arms 1 item
- Chiappa Firearms 9 items
- Christensen Arms 1 item
- Citadel 1 item
- Colt 19 items
- CZ-USA 30 items
- Dan Wesson 2 items
- Daniel Defense 18 items
- Danger Close Armament 20 items
- Dark Hour Defense 1 item
- Dead Air Armament 11 items
- Empire 4 items
- F-1 Firearms 2 items
- Faxon Firearms 3 items
- FNH USA 34 items
- FOR Systems 1 item
- FosTecH 2 items
- Foxtrot Mike 2 items
- Geissele 1 item
- Genesis Arms 3 items
- Global Ordnance 1 item
- Glock 30 items
- Grand Power 17 items
- Grey Birch MFG 4 items
- Grey Ghost Precision 3 items
- Griffin Armament 8 items
- Grit City Cerakote 1 item
- Heckler & Koch 38 items
- Henry 10 items
- HUXWRX 10 items
- IWI 14 items
- Jacob Grey 5 items
- JK Armament 9 items
- JMAC Customs 2 items
- JP Enterprises Inc 6 items
- Kalashnikov USA 1 item
- Kel-Tec 5 items
- Kimber 2 items
- Kings River Custom 3 items
- Knight’s Armament Company (KAC) 5 items
- Korth 1 item
- Kriss USA 1 item
- Laugo Arms 11 items
- Lewis Machine & Tool (LMT) 14 items
- Lone Wolf Arms 3 items
- M+M Industries 2 items
- Marlin 7 items
- MasterPiece Arms 8 items
- Matador Arms 2 items
- Maxim Defense 17 items
- Military Armament Corp. 1 item
- Modern Materiel 7 items
- Mossberg 1 item
- NEMO Arms 1 item
- Next Level Armament 5 items
- Nighthawk Custom 44 items
- Noveske 14 items
- OA Defense 27 items
- Patriot Ordnance Factory (POF) 17 items
- Phoenix Trinity 8 items
- Polymer80 3 items
- Primary Weapon Systems 15 items
- Pristine Technologies 1 item
- Q, LLC 23 items
- Quarter Circle 10 1 item
- Radian Weapons 2 items
- Radical Defense 19 items
- Rainier Arms, LLC 12 items
- Remington 3 items
- Replicator 3 items
- Richmond Tactical 4 items
- Riley Defense 14 items
- Rise Armament 2 items
- RogueOps 3 items
- Rossi 8 items
- Ruger 5 items
- Rugged Suppressors 6 items
- Shadow Systems 33 items
- Siege Suppressors 2 items
- Sig Sauer 132 items
- Silencerco 13 items
- Sionics Weapon Systems 1 item
- Smith & Wesson 5 items
- Sons of Liberty Gun Works 3 items
- Specters Cat 5 items
- Springfield Armory 21 items
- Staccato 52 items
- Stealth Arms 4 items
- Stoeger 16 items
- Surefire 5 items
- Taran Tactical Innovations 2 items
- Tippmann Arms 10 items
- Tisas USA 3 items
- Trailblazer Firearms 1 item
- Trinity Nevada 3 items
- True Precision 3 items
- Uberti 3 items
- V Seven Weapon Systems 8 items
- VKTR Industries 4 items
- Vudoo Gun Works 1 item
- Walther 16 items
- Wilson Combat 6 items
- Wolfpack Armory 2 items
- Zenith Firearms 4 items
- ZEV Technologies 1 item
Model
- 2K11 1 item
- Arex Delta 2 items
- Benelli Supernova 1 item
- Beretta 92X 2 items
- Beretta APX 1 item
- Beretta 1301 1 item
- CZ P-09 2 items
- CZ P-10 5 items
- FNH Five-Seven 1 item
- FNH Scar 1 item
- Glock 19 2 items
- Glock 19X 2 items
- Glock 20 1 item
- Glock 34 1 item
- Glock 43X 3 items
- Glock 44 1 item
- Glock 45 2 items
- Glock 48 1 item
- H&K P30 1 item
- Sig P220 5 items
- Sig P226 6 items
- Sig P229 5 items
- Sig P320 17 items
- Sig P365 8 items
- Sig P365X 2 items
- Sig P365XL 3 items
- Sig P365 X-Macro 1 item
- Sig MCX 10 items
- S&W M&P M2.0 1 item
- Springfield Hellcat 1 item
- Staccato 2011 14 items
- Staccato C2 2 items
- Staccato CS 1 item
- Staccato HD 3 items
- Stoeger STR-9 2 items
Optic Footprint
Option
Platform
- 1911 15 items
- AR-9 2 items
- AR-10/LR308 10 items
- AR-15 53 items
- AK47/74 13 items
- Benelli 5 items
- Beretta 11 items
- Canik 5 items
- CZ 12 items
- FNH 7 items
- Glock 15 items
- H&K 4 items
- Kimber 1 item
- Remington 1 item
- Sig Sauer 68 items
- Smith & Wesson 3 items
- Springfield 4 items
- Staccato 23 items
- Stoeger 2 items
- Walther 4 items
Product Type
- AK Pistol 7 items
- AK-47/74 Rifle 26 items
- AR Pistol 41 items
- AR-10 Rifle 25 items
- AR-15 Complete Upper Receiver 1 item
- AR-15 Rifle 114 items
- AR-9 Complete Lower Receiver 1 item
- AR-9 Pistol 1 item
- AR-9 Rifle 3 items
- Bolt-Action Receiver 2 items
- Bolt-Action Rifle 26 items
- Complete Upper 1 item
- Firearm 56 items
- Handguard 7 items
- Handgun 579 items
- Lever-Action Rifle 24 items
- Magazine 1 item
- Pistol Caliber Carbine 62 items
- Short-Barrel Rifle 32 items
- Shotgun 45 items
- Suppressor 130 items
Rail Length
- 4.5" 2 items
- 5.5" 1 item
- 6.0" 2 items
- 6.7" 1 item
- 7" 4 items
- 7.25" 1 item
- 9" 5 items
- 9.5" 2 items
- 9.75" 5 items
- 10" 1 item
- 10.5" 1 item
- 10.75" 1 item
- 11" 1 item
- 11.5" 1 item
- 11.7" 1 item
- 12" 7 items
- 12.5" 5 items
- 13" 5 items
- 13.5" 6 items
- 13.6" 1 item
- 14" 1 item
- 14.5" 4 items
- 15" 17 items
- 15.25" 1 item
- 16.5" 1 item
Size
Thread Pitch
Twist Rate
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