My Cart
You have no items in your shopping cart.
Rifle Parts
Whether you're building a new rifle from scratch or looking to upgrade an existing firearm, our vast selection of rifle parts has everything you are going to need in that journey. At Rainier Arms' selection of rifle parts, you can find a wide variety of products including lower and upper parts, trigger parts, muzzle devices, and many more.
Explore our selection of high-quality parts coming from various leading manufacturers like Strike Industries, Magpul, BCM, and many more.
Also, don't forget to check our specially-made Rainier Arms barrels for your firearms.
-
-
Forward Controls Design URF V2 AR-15 Stripped Billet Upper Receiver - No Forward Assist5.0 star rating 8 ReviewsSpecial Price $137.92 Regular Price $187.15 -
-
-
-
-
-
Shop By
Shopping Options
Barrel Length
- 3.1" 1 item
- 3.66" 1 item
- 4" 5 items
- 4.5" 2 items
- 5" 5 items
- 5.25" 1 item
- 5.5" 14 items
- 6" 8 items
- 6.5" 3 items
- 6.75" 1 item
- 7" 4 items
- 7.25" 1 item
- 7.5" 8 items
- 7.75" 2 items
- 7.94" 1 item
- 8" 14 items
- 8.3" 4 items
- 8.5" 12 items
- 8.75" 1 item
- 9" 5 items
- 9.5" 1 item
- 9.75" 1 item
- 10" 3 items
- 10.3" 18 items
- 10.5" 41 items
- 10.7" 4 items
- 11" 1 item
- 11.5" 19 items
- 11.85" 2 items
- 12" 12 items
- 12.3" 1 item
- 12.5" 21 items
- 13" 3 items
- 13.5" 1 item
- 13.7" 9 items
- 13.9" 7 items
- 14.5" 36 items
- 16" 125 items
- 16.1" 7 items
- 16.25" 1 item
- 16.3" 2 items
- 18" 79 items
- 20" 33 items
- 20.5" 1 item
- 22" 29 items
- 24" 8 items
- 26" 4 items
Barrel Profile
Caliber
- .22 ARC 6 items
- .22 Cal 2 items
- .22 LR 3 items
- .223/5.56 24 items
- .223 Rem 1 item
- .223 Wylde 57 items
- .30-30 1 item
- .30 Cal 13 items
- .308 17 items
- .308 Win 48 items
- .338 1 item
- .357 Magnum 2 items
- .38/.357 Magnum 1 item
- .44/.45 2 items
- .45-70 GOVT 2 items
- .45 ACP 2 items
- .458 Socom 3 items
- 12 Gauge 1 item
- 300 Blackout 59 items
- 300 Norma Mag 1 item
- 338 Lapua 2 items
- 350 Legend 2 items
- 5.56X45 9 items
- 5.56 NATO 179 items
- 5.56mm 11 items
- 6mm ARC 29 items
- 6.5 Creedmoor 33 items
- 6.5 Grendel 17 items
- 6.5 PRC 2 items
- 6.8 SPC 2 items
- 6MM Creedmoor 17 items
- 7.62mm 7 items
- 7.62x39 12 items
- 7.62x51 10 items
- 8.6 Blackout 14 items
- 9mm 84 items
Category
Configuration
- 90 Degree 1 item
- AR-10 4 items
- AR-15 25 items
- Carbine 1 item
- Clamp on Piston Block 1 item
- Cross 1 item
- Curved 25 items
- Flaming Pig 1 item
- Flat 27 items
- Gen 1-3 1 item
- Gen 3 2 items
- GEN 2 1 item
- Ghetto Blaster 1 item
- Left 1 item
- Left Hand 1 item
- M-LOK 12 items
- M4 Curve 1 item
- Mil-Spec 1 item
- Normal CQR 2 items
- Restricted CQR 2 items
- Rifle 3 items
- Right Hand 1 item
- Solid Piston Block 1 item
- Straight 8 items
- .625 DIA 8 items
- .750 DIA 9 items
- .800 DIA 2 items
- .875 DIA 3 items
- .936 DIA 4 items
- Standard Buffer and Spring 1 item
- Silent Captured Spring 9mm 1 item
- Enhanced Finger Placement (EFP) 1 item
- Type 1 Trunnion 1 item
- Type 2 Trunnion 1 item
- Large Latch 1 item
- Medium Latch 1 item
- Small Latch 1 item
- AK74 [WL 5.62"/143mm][HD .32"/8mm] 1 item
- AIMS-74 [WL 4.80"/122mm][HD .32"/8mm] 1 item
- AK-105 JBI Custom [WL 4.20"/107mm][HD .45"/11mm] 1 item
- AKM Large Bore [WL 5.83"/148mm][HD .31"/8mm] 1 item
- AMD65 [WL 4.67"/119mm][HD .31"/8mm] 1 item
- Arsenal Rifle Small Bore [WL 5.75"/146mm][HD .30"/8mm] 1 item
- Arsenal Rifle Large Bore [WL 5.75"/146mm][HD .30"/8mm] 1 item
- 5.45 Krinkov [WL 2.03"/52mm][HD .32"/8mm] 1 item
- 7.62 Krinkov [WL 2.22"/56mm][HD .31"/8mm] 1 item
- Bulgarian 5.45 Krinkov [WL 2.03"/52mm][HD .42"/11mm] 1 item
- Bulgarian AK74 [WL 5.62"/143mm][HD .42"/11mm] 1 item
- DRACO [WL 4.78"/121mm][HD .32"/8mm] 1 item
- Galil Ace [WL 2.15"/118mm][HD .32"/8mm] 1 item
- M85 [WL 4.41"/112mm][HD .31"/8mm] 1 item
- M92 2.218 [WL 3.90"/99mm][HD .30"/8mm] 1 item
- PSL [WL 3.90"/99mm][HD .30"/8mm] 1 item
- Valmet M76 / Galil Classic ARM [WL 4.20"/107mm][HD .45"/11mm] 1 item
- VEPR Small Bore [WL 5.62"/143mm][HD .32"/8mm] 1 item
- VEPR Big Bore [WL 5.62"/143mm][HD .32"/8mm] 1 item
- WZ89 Onyks [WL 2.15"/55mm][HD .32"/8mm] 1 item
- .478 +/- Bolt Face 1 item
- 2-Slot 2 items
- 3-Slot 2 items
- AKM 1 item
- AKSU 1 item
Finish
- Arid 2 items
- Bead Blast Stainless Steel 1 item
- Black 22 items
- Black Anodize 1 item
- Black Nitride 3 items
- Blue 1 item
- Case Hardened 1 item
- Carbon Fiber 7 items
- Cerakote 14 items
- Chrome 1 item
- DLC 7 items
- FDE 5 items
- Gold 1 item
- Grey 1 item
- Melonite 3 items
- NiB-X 4 items
- Nickel Boron 6 items
- Nitride 123 items
- Nitromet 7 items
- Phosphate 7 items
- Polished 48 items
- Red 4 items
- Satin 95 items
- Anodize 82 items
- Clear Hard Anodize 4 items
- PVD/CVD 1 item
- Quench Polish Quench (QPQ) 6 items
- Titanium Nitride (TiN) 1 item
Gas System
Inside Diameter
Manufacturer
- 21st Tec 6 items
- A3 Industries 59 items
- Accu-Tac 2 items
- Advanced Armament Company (AAC) 4 items
- Aero Precision 65 items
- Aeroknox 8 items
- Agency Arms 1 item
- Airborne Arms 3 items
- ALG Defense 6 items
- American Trigger Company (ATC) 3 items
- Andro Corp Industries 4 items
- Angstadt Arms 17 items
- Apex Tactical Specialties 4 items
- Arisaka 7 items
- Armaspec 3 items
- Arms Republic 8 items
- Ascalon Arms 11 items
- Atrius 1 item
- Brügger & Thomet (B&T) 3 items
- B5 Systems 22 items
- Ballistic Advantage 46 items
- Battle Arms Development 42 items
- Black River MFG 1 item
- Blitzkrieg Components 16 items
- BOBRO 1 item
- Bootleg 4 items
- Boss Barrels 13 items
- Bravo Company MFG (BCM) 93 items
- Brigand Arms 2 items
- Centurion Arms 25 items
- Chisel Machining 5 items
- Christensen Arms 3 items
- CMC Triggers 1 item
- Cross Machine Tool (CMT) 16 items
- Daniel Defense 24 items
- Dead Air Armament 7 items
- Dead Foot Arms LLC 10 items
- Devil Dog Concepts 7 items
- Die Free Co 4 items
- DPM Systems Technologies 5 items
- Drew Meyers Defense 8 items
- Driven Arms Co. 23 items
- Eartune 1 item
- Edgar Sherman Design 3 items
- Elftmann Tactical 6 items
- Emissary Development 11 items
- Ergo Grips 8 items
- F-1 Firearms 3 items
- F5 MFG 13 items
- Faxon Firearms 71 items
- Ferfrans 1 item
- Fightlite Industries 1 item
- Flatline Fiber Co 1 item
- Form Rifle 12 items
- Fortis MFG 60 items
- Forward Controls Design 94 items
- FosTecH 1 item
- Gear Head Works 6 items
- Geissele 47 items
- Grand Power 2 items
- Grey Birch MFG 7 items
- Grey Ghost Precision 1 item
- Griffin Armament 28 items
- Half Cocked Arms (HCA) 1 item
- HB Industries 25 items
- HERA ARMS 15 items
- Heresy Design 8 items
- Hiperfire 25 items
- HUXWRX 11 items
- Icarus Precision 2 items
- Icon Defense 8 items
- Jacob Grey 1 item
- James Madison Tactical (JMT) 3 items
- JK Armament 14 items
- JL Billet 3 items
- JMAC Customs 80 items
- JMK Customs 17 items
- JP Enterprises Inc 49 items
- KAK Industries 1 item
- Kaw Valley Precision 1 item
- Kick-Eez 7 items
- Killer Innovations 1 item
- Kinetic Development Group 8 items
- Knight’s Armament Company (KAC) 21 items
- KNS Precision 15 items
- Kratos Design Group 3 items
- Krebs Customs 8 items
- KynSHOT 6 items
- Lantac 28 items
- Law Tactical 2 items
- Lee Sporting 4 items
- Leitner-Wise 1 item
- Lewis Machine & Tool (LMT) 32 items
- Mad Pig 6 items
- Mag-Pod 1 item
- Magpul Industries 78 items
- Matador Arms 2 items
- Maxim Defense 33 items
- MCM Firearms 1 item
- Mega Arms 1 item
- Midwest Industries 40 items
- Mission First Tactical 1 item
- Multitasker Tools 1 item
- NEMO Arms 7 items
- Neverwear Springs 1 item
- Next Level Armament 27 items
- NIGHT FISION 1 item
- Noveske 66 items
- Obsidian Arms 1 item
- Odin Works 1 item
- Patriot Ordnance Factory (POF) 9 items
- Precision Armament 17 items
- Precision Reflex Inc 2 items
- Primary Weapon Systems 22 items
- Q, LLC 28 items
- Quarter Circle 10 5 items
- R&D Precision 4 items
- Radian Weapons 21 items
- Raidworx 1 item
- Rainier Arms, LLC 250 items
- Rainier Industries 17 items
- Rearden MFG 2 items
- Rehv Arms 2 items
- Reptilia Corp 13 items
- Rex Silentium 1 item
- Riflespeed 3 items
- Rise Armament 24 items
- ROAM Rifles 4 items
- RogueOps 5 items
- RS Regulate 6 items
- Samson Manufacturing Corp. 2 items
- SB Tactical 14 items
- SCALARWORKS 1 item
- Seekins Precision 1 item
- Sharps Bros 27 items
- Shooting Innovations 2 items
- Siege Suppressors 2 items
- Sig Sauer 13 items
- Silencerco 14 items
- Sionics Weapon Systems 6 items
- SLR Rifleworks 7 items
- Sons of Liberty Gun Works 44 items
- Spinta Precision 6 items
- Sprinco (Tactical Springs) 7 items
- Springer Precision 1 item
- Stag Arms 2 items
- Stern Defense 11 items
- Strike Industries 15 items
- Superlative Arms 14 items
- Surefire 12 items
- Tactical Edge Arms 2 items
- Tango Down 1 item
- Taran Tactical Innovations 2 items
- Timney Triggers 32 items
- Tippmann Arms 1 item
- Torrent Suppressors 1 item
- Triggertech 13 items
- Troy Industries 7 items
- TruCalibre 9 items
- True North Concepts 12 items
- True Precision 3 items
- Tyrant Designs 17 items
- Underground Tactical 1 item
- Unity Tactical 1 item
- V Seven Weapon Systems 67 items
- VKTR Industries 5 items
- VLTOR 17 items
- War Hammer 1 item
- White Label Armory 2 items
- WMD Guns 17 items
- WOOX 6 items
Model
- APC9 2 items
- APC10 2 items
- APC45 2 items
- AR-15 2 items
- CZ Bren 5 items
- CZ Scorpion 23 items
- FNH 509 1 item
- FNH Scar 3 items
- H&K G36 2 items
- H&K MP5 3 items
- H&K MP5K 2 items
- IWI Galil 1 item
- IWI Tavor 1 item
- Remington 700 5 items
- RIA VR80 1 item
- Sig MCX 12 items
- Sig MPX 9 items
- Springfield Hellcat 1 item
- Stribog 2 items
Option
- AK-47/74 13 items
- AR-9 10 items
- AR-10 49 items
- AR-15 269 items
- FN 509 1 item
- Standard 6 items
- 4.720" 1 item
- 6.295" 1 item
- 7.870" 2 items
- 9.445" 1 item
- Bull's Eye 1 item
- Vertical Lines 1 item
- Minimal 1 item
- H2 Buffer 2 items
- White - Standard Power 1 item
- Blue - Enhanced Power 1 item
- Red - Extra Power 1 item
- Orange - Extra Extra Power 1 item
- Yellow - Reduced Power 1 item
- White/Red - Intermediate Power 1 item
- Green - Rifle Length Standard Power 1 item
- Remington 700 Short Action 3 items
- Remington 700 Short Action BDL 2 items
- Remington 700 Long Action BDL 1 item
- Sauer 100 1 item
- WA 2 items
- KS 2 items
- JP Silent Captured Spring - Standard 1 item
- JP Silent Captured Spring - Heavy 1 item
- JP Silent Captured Spring - 9mm 1 item
- Buffer & Spring - Standard 3 items
- Buffer & Spring - 9mm 2 items
- Buffer & Spring - H1 3 items
- Buffer & Spring - H2 2 items
- Buffer & Spring - H3 2 items
- Heavy 1 item
- 1.125-28 TPI 3 Lug/Booster Adaptor 1 item
- 1.180-24 TPI 3 Lug/Booster Adaptor 1 item
- 9mm 1 item
- CZ 27 items
- FNH 2 items
- Glock 3 items
- Heckler & Koch 2 items
- Remington 1 item
- Sharps Bros 1 item
- Sig Sauer 2 items
- Springfield 1 item
- Holed 1 item
- Profile 1 item
- Small Lever 3 items
- Large Lever 3 items
- AKM 1 item
- Green Laser 1 item
- Adjustable 14 items
- Non-Adjustable 29 items
- MCS 2 items
- Full Size 2 items
- IWI Uzi Pro 1 item
- B&T APC 1 item
- Dimpled 4 items
- Serrated 5 items
- 9.5" 2 items
- 11" 2 items
- Polymer 1 item
- Aluminum 1 item
- Smooth 6 items
- Grid 2 items
- Honeycomb 4 items
- Honeycomb w/ Logo 1 item
- Textured 3 items
- Skelestock 2 items
- Xeno 1 item
- Triangle Stock 2 items
- Modular 1 item
- Traditional 7 items
- Tactical 7 items
- Folding 7 items
- +10 4 items
- With Handstop 4 items
- SCG/SCG-L/SCG-S/AK SCG 1 item
- VCG/VCG-L 1 item
- Fine Texture 1 item
- Coarse Texture 1 item
Platform
- 10-22 5 items
- AR-9 8 items
- AR-10/LR308 85 items
- AR-15 442 items
- AK47/74 23 items
- CZ 24 items
- FNH 4 items
- H&K 5 items
- IWI 2 items
- Remington 4 items
- Remington 700 15 items
- Ruger 5 items
- Ruger Precision Rifle 12 items
- Savage Small Shank 15 items
- Sig Sauer 20 items
- Sig Cross 4 items
- Sig MPX 1 item
- Springfield 1 item
- Steyr Aug 5 items
Price
Product Type
- 80% Lower 2 items
- 10/22 Barrel 1 item
- 10/22 Receiver 3 items
- Accessory 6 items
- Adapter Plate 2 items
- AK Accessories 1 item
- AK Handguard 1 item
- Angled Grip 26 items
- Anti Walk Pins 4 items
- AR-10/LR308 Barrel 65 items
- AR-10 / LR 308 Charging Handle 10 items
- AR-10 Complete Lower Receiver 1 item
- AR-10 Complete Upper Receiver 2 items
- AR-10 Partial Upper Receiver 3 items
- AR-10 Handguard 7 items
- AR-10 Receiver Set 6 items
- AR-10 Stripped Lower Receiver 5 items
- AR-10 Stripped Upper Receiver 3 items
- AR-15 Assembled Upper Receiver 6 items
- AR-15 Barrel 257 items
- AR-15 Charging Handle 46 items
- AR-15 Complete Lower Receiver 35 items
- AR-15 Complete Upper Receiver 63 items
- AR-15 Partial Upper Receiver 44 items
- AR-15 Handguard 89 items
- AR-15 Receiver Set 19 items
- AR-15 Rifle 1 item
- AR-15 Stripped Lower Receiver 58 items
- AR-15 Stripped Upper Receiver 37 items
- AR-15 Upper Receiver Group 1 item
- AR-9 Lower Receiver 4 items
- AR-9 Complete Lower Receiver 2 items
- AR-9 Partial Upper Receiver 1 item
- AR-9 Receiver Set 3 items
- AR-9 Upper Receiver 10 items
- Barrel Adapter 2 items
- Barrel Nut 4 items
- Blast Shield 6 items
- Bolt 24 items
- Bolt-Action Barrel 52 items
- Bolt-Action Receiver 1 item
- Bolt Carrier Group 67 items
- Bolt Catch 24 items
- Brace 43 items
- Brace Strap 2 items
- Buffer 33 items
- Buffer Kit 17 items
- Buffer Spring 19 items
- Buffer Tube 20 items
- Builders Kit 2 items
- Buttpad 1 item
- Cam Pin 6 items
- Castle Nut 5 items
- Castle Nut / End Plate 5 items
- Cable Clip 1 item
- Charging Handle 45 items
- Chassis 38 items
- Cheek Riser 5 items
- Compensator 57 items
- Complete Upper 18 items
- Crush Washer 3 items
- Dust Cover 15 items
- End Cap 9 items
- End Plate 16 items
- Failure Resistant Extractor 2 items
- Finger Stop 2 items
- Firing Pin 7 items
- Flash Hider 71 items
- Forearm Accesory 23 items
- Forward Assist 10 items
- Forward Assist Spring 1 item
- Front Sight 2 items
- Gas Block 53 items
- Gas Rings 3 items
- Gas Tube 7 items
- Grip Accessory 12 items
- Grip Module 2 items
- Grip Screw 1 item
- Gunsmithing Tool 1 item
- Handguard 72 items
- Handguard Adaptor 2 items
- Handgun 1 item
- Handstop 60 items
- Iron Sight 2 items
- Key Screw 1 item
- Lower Parts Kit 23 items
- Lower Receiver 5 items
- Magazine 1 item
- Magazine Button 2 items
- Magazine Catch 11 items
- Magazine Release 23 items
- Magazine Spring 1 item
- Magwell 10 items
- Muzzle Brake 115 items
- Muzzle Device Accessory 25 items
- Partial Upper Receiver 1 item
- Parts Kit 13 items
- Patch 1 item
- Pistol Grip 79 items
- Pistol Part 1 item
- Piston 1 item
- Piston System 8 items
- Port Door 5 items
- Port Door Rod 6 items
- Port Door Spring 1 item
- Rail Adapter 13 items
- Rail Cover 2 items
- Rail Panel 17 items
- Rail Section 3 items
- Recoil Spring 2 items
- Retainer Pin 5 items
- Roll Pin 2 items
- Safety Selector 50 items
- Shim Set 6 items
- Sig MPX Barrel 1 item
- Sight Post 13 items
- Silent Captured Spring 2 items
- Sling Mount 2 items
- Spring 9 items
- Steyr Aug Barrel 5 items
- Stock 112 items
- Stock Accessory 29 items
- Stock Adapter 29 items
- Suppressor 1 item
- Suppressor Adapter 1 item
- Take Down / Pivot Pins 22 items
- Trigger 136 items
- Trigger / Hammer Pins 4 items
- Trigger Guard 16 items
- Trigger Spring 1 item
- Upper Parts Kit 3 items
- Vertical Grip 42 items
- Weight 1 item
Rail Length
- 3" 1 item
- 3.25" 1 item
- 4" 3 items
- 4.25" 4 items
- 4.5" 2 items
- 4.9" 1 item
- 5" 2 items
- 5.5" 2 items
- 5.99" 1 item
- 6.0" 7 items
- 6.25" 3 items
- 6.375" 1 item
- 6.5" 1 item
- 6.7" 8 items
- 6.75" 3 items
- 6.91" 1 item
- 7" 19 items
- 7.2" 2 items
- 7.25" 2 items
- 7.3" 1 item
- 7.5" 2 items
- 7.8" 1 item
- 7.9" 2 items
- 8" 6 items
- 8.25" 1 item
- 8.5" 2 items
- 8.6" 1 item
- 9" 10 items
- 9.1" 1 item
- 9.15" 2 items
- 9.2" 2 items
- 9.25" 1 item
- 9.3" 3 items
- 9.5" 22 items
- 9.55" 7 items
- 9.59" 1 item
- 9.6" 7 items
- 9.75" 5 items
- 10" 30 items
- 10.25" 1 item
- 10.3" 1 item
- 10.5" 15 items
- 10.64" 2 items
- 10.7" 4 items
- 10.75" 3 items
- 10.8" 1 item
- 11" 5 items
- 11.1" 2 items
- 11.25" 1 item
- 11.5" 11 items
- 11.7" 4 items
- 11.75" 2 items
- 11.8" 4 items
- 12" 29 items
- 12.25" 1 item
- 12.4" 3 items
- 12.43" 1 item
- 12.5" 13 items
- 12.55" 1 item
- 12.6" 3 items
- 12.625" 1 item
- 12.75" 1 item
- 12.8" 1 item
- 13" 15 items
- 13.25" 2 items
- 13.5" 14 items
- 13.6" 4 items
- 13.625" 2 items
- 13.7" 9 items
- 13.75" 1 item
- 13.8" 7 items
- 14" 9 items
- 15" 60 items
- 15.25" 1 item
- 15.3" 7 items
- 15.5" 2 items
- 15.8" 1 item
- 16" 1 item
- 16.3" 1 item
- 16.5" 5 items
- 17" 2 items
- 18" 2 items
Size
- 3" 1 item
- BACK STRAP:Large 1 item
- BACK STRAP:Medium 2 items
- Small 1 item
- Medium 5 items
- Large 5 items
- X-Large 2 items
- 6" 1 item
- 3 Slot 3 items
- 5 Slot 6 items
- 7 Slot 2 items
- 9 Slot 26 items
- 1/2" 1 item
- 5/8" 1 item
- 1.9" 2 items
- 2.1" 2 items
- 2.4" 1 item
- 3.3" 2 items
- 3.68" 1 item
- 4.3" 2 items
- 4.8" 2 items
- 5.8" 2 items
- 5.9" 1 item
Thread Pitch
Twist Rate
My Wish List
Last Added Items
You have no items in your wish list.
