{"product_id":"custom-niji-5-1-hi-capa-gas-blowback-airsoft-pistol-gray-black-1","title":"Custom Niji 5.1 Hi-Capa Gas Blowback Airsoft Pistol - (Gray\/Black)","description":"The Custom Niji 5.1 Hi-Capa Gas Blowback Airsoft Pistol in gray and black is a fully built premium sidearm designed for players who demand top-tier performance and unmatched style. Built from a combination of CNC aluminum and stainless steel components, this pistol delivers strength, durability, and precision with every shot. At its core is the Atlas Custom Works EX01 slide and frame kit, complete with lightweight cutouts, paired with a stainless steel fluted threaded outer barrel for tracer or suppressor compatibility. Internally, the pistol is reinforced with a CNC blowback housing, steel disconnector, and valve knocker for reliability under heavy use, while the Unicorn 6.03mm tightbore inner barrel and CNC hop-up chamber maximize accuracy and consistency. With a shooting velocity of 310-320 FPS and a 31-round magazine, this Hi-Capa is ready for both competitive and casual play. On the exterior, this build combines style with function. A slim ergonomic grip in wolf gray ensures superior control, while rainbow-accented CowCow upgrades, including the hammer, guide rod, trigger, silencer adapter, and grip screws, add eye-catching detail. The pistol also comes equipped with a Lancer Tactical x Acetech Bifrost tracer unit that offers multi-color RGB flame effects, as well as an Atlas Custom Works M1 Micro Red Dot sight for rapid target acquisition. Every component has been carefully chosen to deliver an edge on the field, from the Dr. Black recoil spring for faster cycling to the TTI Infinity hop-up chamber for precision tuning. Packaged with a padded 13 inch Code 11 pistol bag for safe transport, the Custom Niji 5.1 is more than just an airsoft gun-it's a statement piece built for players who want performance, customization, and premium quality in one complete package.\u003cbr\u003e\u003cbr\u003e\u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrand: Custom build with Atlas Custom Works, Laylax, CowCow, Airsoft Masterpiece, TTI, Unicorn Airsoft, Lancer Tactical, Tokyo Marui, Dr. Black, Golden Eagle, Code 11\u003c\/li\u003e\n\u003cli\u003eType: Gas Blowback Hi-Capa Pistol (custom)\u003c\/li\u003e\n\u003cli\u003eMaterial: CNC aluminum and stainless steel components\u003c\/li\u003e\n\u003cli\u003eMagazine Capacity: 31 rounds\u003c\/li\u003e\n\u003cli\u003eFPS: 310-320\u003c\/li\u003e\n\u003cli\u003eRail\/Attachment Options: Threaded outer barrel, tracer\/suppressor compatibility, optic mount base\u003c\/li\u003e\n\u003cli\u003eColor: Gray\/Black with rainbow-accented components\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFully custom-built premium Hi-Capa airsoft pistol\u003c\/li\u003e\n\u003cli\u003eCNC aluminum EX01 slide and frame kit with lightweight cutouts\u003c\/li\u003e\n\u003cli\u003eStainless steel fluted threaded outer barrel for tracer or suppressor compatibility\u003c\/li\u003e\n\u003cli\u003ePrecision CNC blowback housing for smooth and reliable cycling\u003c\/li\u003e\n\u003cli\u003eMatch grade stainless steel hammer and guide rod with adjustable recoil spring system\u003c\/li\u003e\n\u003cli\u003eUpgraded steel disconnector and valve knocker for durability\u003c\/li\u003e\n\u003cli\u003eUnicorn 6.03mm precision inner barrel with hop-up bucking for improved accuracy\u003c\/li\u003e\n\u003cli\u003eOne-piece CNC hop-up chamber for stable performance\u003c\/li\u003e\n\u003cli\u003eSlim ergonomic grip in wolf gray with aggressive texture for secure handling\u003c\/li\u003e\n\u003cli\u003eAmbidextrous aluminum thumb safety for enhanced control\u003c\/li\u003e\n\u003cli\u003eEquipped with Bifrost RGB tracer unit with multi-color flame effects\u003c\/li\u003e\n\u003cli\u003eIncludes compact M1 Micro Red Dot sight for rapid target acquisition\u003c\/li\u003e\n\u003cli\u003e31-round Hi-Capa magazine with extended baseplate\u003c\/li\u003e\n\u003cli\u003eComes with a padded 13 inch Code 11 pistol bag for safe transport\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eUpgraded Parts\u003c\/strong\u003e\u003c\/h3\u003e\u003cstrong\u003eAtlas Custom Works CNC EX01 Slide \u0026amp; Frame Kit For Marui TM Hi-Capa GBBP Series - (Gray\/Black)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eCNC Aluminum Construction\u003c\/li\u003e\n\u003cli\u003eCNC Cutout Lightweight Design\u003c\/li\u003e\n\u003cli\u003eRecoil Spring Guide, Hammer Housing Included\u003c\/li\u003e\n\u003cli\u003eCompatible With Tokyo Marui TM Hi-Capa GBBP Series\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eLaylax Nine Ball Tokyo Marui Hi-Capa Custom Magazine Catch (Color: Heat Gradation)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003ePrecision, lightweight aluminum design secures your magazine and ensures fast release\u003c\/li\u003e\n\u003cli\u003eStylish and eye catching heat gradation finish\u003c\/li\u003e\n\u003cli\u003eDirect replacement or upgrade component that is easy to install\u003c\/li\u003e\n\u003cli\u003eAdjustable lever angle\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eLancer Tactical x Acetech Special Edition Biforst Tracer Unit with Multi Color RGB Flame Effect (Color: Rainbow)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eThe new Lancer Tactical Acetech crossover offers a Special Edition of the Bifrost which has a new unique rainbow heat gradation color scheme\u003c\/li\u003e\n\u003cli\u003eThe Acetech Bifrost simulates muzzle flash, and the effect of the flame depends on the volume of gas or water fog around the muzzle, with more volume the effect will be better looking\u003c\/li\u003e\n\u003cli\u003eBifrost provides two different tracer modes (normal tracer and sniper)\u003c\/li\u003e\n\u003cli\u003eAcetech's newest innovation is the 11 different multi-color flame function that looks incredible when firing a barrage of BBs down range\u003c\/li\u003e\n\u003cli\u003eEmblaze the BBs track into a rainbow colored beam when firing\u003c\/li\u003e\n\u003cli\u003eIntelligent power on and off controls (The tracer will power on by a simple shake and enter sleep mode while idle for more than 5 minutes)\u003c\/li\u003e\n\u003cli\u003eMade to support rifles that can shoot up to 35 RPS burst speeds all while still being brighter than ordinary illuminators\u003c\/li\u003e\n\u003cli\u003eBattery can supply up to 20,000 rounds with one charge\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eLancer Tactical Stainless Steel Fluted Threaded 5.1 Outer Barrel (Color: Rainbow)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eStainless steel construction with a polished silver finish that looks and feels high quality\u003c\/li\u003e\n\u003cli\u003e11mm clockwise internal threading that makes mounting mock suppressors and tracer units quick and easy\u003c\/li\u003e\n\u003cli\u003eLightening cuts in barrel makes for faster cycling\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eAirsoft Masterpiece Steel Disconnector \u0026amp; Valve Knocker Set for Hi-Capa\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eHeavy duty CNC steel construction\u003c\/li\u003e\n\u003cli\u003eDrop-in part improves pistol reliability and reduces wear\u003c\/li\u003e\n\u003cli\u003eStiffer spring design than stock ones\u003c\/li\u003e\n\u003cli\u003eComes with disconnector and spring\u003c\/li\u003e\n\u003cli\u003eCompatible with Tokyo Marui Hi-Capa pistols\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eCowCow Technology CNC Aluminum B02 Dynamic Blowback Housing for TM Hi-Capa \/ 1911 Pistols (Black)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003ePrecision CNC machined 7075 aluminum construction\u003c\/li\u003e\n\u003cli\u003eUltra lightweight design\u003c\/li\u003e\n\u003cli\u003eDurable construction prevents flexing and warping under hard use\u003c\/li\u003e\n\u003cli\u003eProvide stable and smooth blowback cycling\u003c\/li\u003e\n\u003cli\u003eCompatible with stock TM piston head and CowCow piston head\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eCowCow Match Grade Stainless Steel Hammer for Tokyo Marui Hi-Capa\/1911 (Color: Rainbow)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003ePrecision CNC machined stainless steel construction\u003c\/li\u003e\n\u003cli\u003eDrop in upgrade or replacement component\u003c\/li\u003e\n\u003cli\u003eTitanium nitride treated finish for greatly improved durability and smoother operation\u003c\/li\u003e\n\u003cli\u003eDurable construction for IPSC shooter use\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eCowCow RM1 Stainless Steel Guide Rod for Tokyo Marui Hi-Capa GBB Pistols (Color: Rainbow)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003ePrecision CNC machined stainless steel construction\u003c\/li\u003e\n\u003cli\u003eDirect drop in 2nd spring and additional spring housing design\u003c\/li\u003e\n\u003cli\u003e3 different weight of recoil springs for precise calibration\u003c\/li\u003e\n\u003cli\u003eCombine with primary spring to soften recoil\u003c\/li\u003e\n\u003cli\u003eEnhance the reaction force to speed up the blowback cycle\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eCowCow A01 Silencer Adapter for Tokyo Marui Hi-Capa\/1911 (11mm CW to 14mm CCW) (Color: Rainbow)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eCNC machined stainless steel construction\u003c\/li\u003e\n\u003cli\u003e11mm positive to 14mm negative that allows for the mounting of most popular mock suppressors\u003c\/li\u003e\n\u003cli\u003eDesigned for Tokyo Marui Hi-Capa\/1911\u003c\/li\u003e\n\u003cli\u003eDurable and lightweight aluminum alloy construction\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eCowcow D01 Dottac Magazine Base for Tokyo Marui Hi-Capa\/1911 (Color: Rainbow)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003ePrecision CNC machined aluminum construction\u003c\/li\u003e\n\u003cli\u003e10 x 14 dots for labeling (Use ink or paint pen to customize\u003c\/li\u003e\n\u003cli\u003eShifting pin holding system can latch the magazine tightly\u003c\/li\u003e\n\u003cli\u003eWeather resistant anodized finish\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eCowCow T2 Aluminum Trigger for Tokyo Marui Hi-Capa\/1911 GBB Pistols (Color: Rainbow)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003ePrecision CNC machined aluminum construction\u003c\/li\u003e\n\u003cli\u003eAdjustable pre-travel system\u003c\/li\u003e\n\u003cli\u003eDirect drop in upgrade or replacement part\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eCowCow Stainless Steel Grip Screws for Hi-Capa Gas Blowback Pistols (Color: Rainbow)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eDurable stainless steel construction enhances the overall look and strength\u003c\/li\u003e\n\u003cli\u003eCompatible with Tokyo Marui Hi-Capa spec gas blowback airsoft pistols\u003c\/li\u003e\n\u003cli\u003eExcellent as a replacement or upgrade part for your Hi-Capa pistol\u003c\/li\u003e\n\u003cli\u003eScratch and corrosion resistant coating\u003c\/li\u003e\n\u003cli\u003eAttaches the pistol grip onto the airsoft pistol frame\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eTTI Airsoft Tokyo Marui Hi Capa GBB Infinity One Piece Full CNC TDC Hop Up Chamber - (Black)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eCNC Aluminum Construction\u003c\/li\u003e\n\u003cli\u003eTDC Style Hop-Up Chamber\u003c\/li\u003e\n\u003cli\u003eOne-Piece Hop-Up Chamber\u003c\/li\u003e\n\u003cli\u003eDesigned for the Tokyo Marui Hi-Capa Series Gas Airsoft Pistols\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eLaylax Nine Ball Custom Slim R Grip for Hi-Capa Gas Blowback Airsoft Pistols (Color: Wolf Gray)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eInjection molded polymer construction that is very lightweight and durable\u003c\/li\u003e\n\u003cli\u003eSimplistic textured and slim grip gives players the option for a superior hold on the handgun\u003c\/li\u003e\n\u003cli\u003eSide panels are aggressively texture to prevent slippage even while wearing gloves\u003c\/li\u003e\n\u003cli\u003eThe grip features a competition undercut on the grip\u003c\/li\u003e\n\u003cli\u003eErgonomically designed for superior grip\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eAtlas Custom Works Aluminum Thumb Safety-Ambi for Marui Hi-Capa GBB Pistol - (Black)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eCNC Aluminum Construction\u003c\/li\u003e\n\u003cli\u003eAnodized Finish\u003c\/li\u003e\n\u003cli\u003eType-1 design\u003c\/li\u003e\n\u003cli\u003eAmbidextrous Control\u003c\/li\u003e\n\u003cli\u003eDrop-in Installation\u003c\/li\u003e\n\u003cli\u003eCompatible with Marui \/ WE Hi-capa series and similar GBB\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eUnicorn Airsoft 113mm 6.03mm Ultimate Precision Inner Barrel For GBB W\/ Bucking\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003e6.03mm tightbore diameter for improved accuracy and consistency\u003c\/li\u003e\n\u003cli\u003eNitroflon coating for reduced friction and enhanced performance\u003c\/li\u003e\n\u003cli\u003eSmooth bore and precision honing for optimal BB trajectory\u003c\/li\u003e\n\u003cli\u003eCompatible with most GBB airsoft pistols\u003c\/li\u003e\n\u003cli\u003eIncludes upgraded hop-up bucking\u003c\/li\u003e\n\u003cli\u003eEasy installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eLaylax Nine Ball Aluminum Custom Neo Scope Mount Base for Tokyo Marui Hi-Capa 5.1 Series GBB Pistols (Color: Heat Gradation)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eAluminum alloy construction\u003c\/li\u003e\n\u003cli\u003eCNC machined for a precise fit\u003c\/li\u003e\n\u003cli\u003eDesigned for use with Tokyo Marui and other compatible gas blowback Hi-Capa pistols\u003c\/li\u003e\n\u003cli\u003eAdjustable rail piece can be brought forward or backwards, right and left, for maximum tuning capability\u003c\/li\u003e\n\u003cli\u003eIncluded extended slide stop helps with smoother reloads\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eDr. Black 100% Recoil Spring for Tokyo Marui Hi-CAPA Gas Blowback Airsoft Pistols\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eDurable, long-lasting steel construction\u003c\/li\u003e\n\u003cli\u003e100% spring helps increase cycling speed\u003c\/li\u003e\n\u003cli\u003eEnhanced durability\u003c\/li\u003e\n\u003cli\u003eDrop-in component\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eTOKYO MARUI 31RD MAGAZINE FOR TM HI CAPA 5.1 GBB AIRSOFT PISTOL (BLACK)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eDURABLE ALUMINUM ALLOY\u003c\/li\u003e\n\u003cli\u003eDESIGNED ONLY FOR TOKYO MARUI AND MOST HI CAPA GBB PISTOLS\u003c\/li\u003e\n\u003cli\u003eHOLDS UP TO 31 ROUNDS\u003c\/li\u003e\n\u003cli\u003eFEATURES AN EXTENDED BASE PLATE FOR PROTECTION AND GRABBING\u003c\/li\u003e\n\u003cli\u003eGAS EFFICIENT CONSTRUCTION CONSISTENTLY FIRES BBS AT THE SAME OUTPUT\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eAtlas Custom Works M1 Micro Sight Red Dot - (Black)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eCompact Red dot sight for rapid target acquisition\u003c\/li\u003e\n\u003cli\u003eDurable construction designed for tactical use\u003c\/li\u003e\n\u003cli\u003eEasy windage and elevation adjustment knobs\u003c\/li\u003e\n\u003cli\u003eClear protective lens for optimal visibility\u003c\/li\u003e\n\u003cli\u003eQuick detach mount for easy installation and removal\u003c\/li\u003e\n\u003cli\u003eLightweight design suitable for various firearms\u003c\/li\u003e\n\u003cli\u003eBattery-powered with easy-access compartment\u003c\/li\u003e\n\u003cli\u003eIdeal for close to mid-range shooting applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eGolden Eagle Airsoft Spring and Plunger Set for Hi Capas\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eHigh tension plunger spring\u003c\/li\u003e\n\u003cli\u003eDirect replacement component Tokyo Marui Spec Hi Capas\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eCode 11 13 Inch Pistol Bag with Laser Cut Molle Panel (Color: Grey)\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003eThe pistol case is built from rugged all-weather nylon fabric and features a padded interior zipper compartment for your sidearms\u003c\/li\u003e\n\u003cli\u003eInside the case there is a series of heavy duty elastic straps that holds magazines and accessories in place\u003c\/li\u003e\n\u003cli\u003eDurable zippers that don't snag\u003c\/li\u003e\n\u003cli\u003eLaser cut Molle panel on the face allows for the attachment of additional pouches\u003c\/li\u003e\n\u003c\/ul\u003ePackage Includes: 1x Gun, 1x Magazine, 1x Manual","brand":"XTREME Airsoft Superstore","offers":[{"title":"Default Title","offer_id":53081740050798,"sku":"DR-ACW-GB-574-GYBK","price":965.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0899\/9524\/7982\/files\/DR-ACW-GB-574-GYBK_MED_023a7ecb-f30f-46f2-b3ae-6cc97d84d2bb.jpg?v=1766004536","url":"https:\/\/store.xtremeairsoft.net\/products\/custom-niji-5-1-hi-capa-gas-blowback-airsoft-pistol-gray-black-1","provider":"XTREME Airsoft Superstore","version":"1.0","type":"link"}