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From £249.99
  • Ultra-realistic GBB rifle
  • Full Metal Construction
  • Ambidextrous controls

If you have been looking to take the realism of your Airsofting experience to the next level, look no further! This GBBR by Golden Eagle provides heightened realism over any AEG with its reciprocating full-sized bolt carrier, soul shattering recoil and realistic bolt hold-open function, all at a price point unheard of for a Gas Blowback rifle.

From £259.99
  • Ultra-realistic GBB rifle
  • Full Metal Construction
  • Ambidextrous controls

If you have been looking to take the realism of your Airsofting experience to the next level, look no further! This GBBR by Golden Eagle provides heightened realism over any AEG with its reciprocating full-sized bolt carrier, soul shattering recoil and realistic bolt hold-open function, all at a price point unheard of for a Gas Blowback rifle.

From £339.99
  • Ultra-realistic GBB rifle
  • Full Metal Construction
  • Ambidextrous controls

If you have been looking to take the realism of your Airsofting experience to the next level, look no further! This GBBR by Golden Eagle provides heightened realism over any AEG with its reciprocating full-sized bolt carrier, soul shattering recoil and realistic bolt hold-open function, all at a price point unheard of for a Gas Blowback rifle. Complete with a military styled MK18 rail system, this rifle has all the rails you'll need to style it up to your liking!

This GBBR is now officially licenced by Daniel Defense through EMG in its latest version, further details on this are to come, but look at those gorgeous DD trademarks! 

From £339.99
  • Full metal construction
  • ZET System GBBR - TM compatible internals
  • Ferocious recoil, realistic handling  - Just awesome!

If you have a taste for realism, recoil and a new challenge in game, the Noveske N4 GBBR from EMG will give you what you need. This Gas Blowback Rifle boasts full metal construction, licenced Noveske trademarks and internals based on the best of the best when it comes to GBBRs; the Tokyo Marui ZET system. 

Not for the faint of heart or those who like to fight easy, a GBBR provides unparalleled realism with its realistic manual of arms involving loading the first round using the charging handle, counting your shots carefully due to low-cap magazines and taking your reloading skills to the next level thanks to its functional bolt lock. While a GBBR is a challenge to operate compared to a simple AEG, there is nothing that can touch a GBBR when it comes to its immersive firing experience and unparalleled realism. 

Licenced by Noveske through EMG and manufactured by Double Eagle, the N4 has absolutely gorgeous externals, with a thick, hard-wearing finish that looks phenomenal and showcases the crisply engraved Noveske trademarks which tie the whole piece together. The N4 GBBR also has a full steel trigger group pre-installed, saving you money down the line on essential longevity upgrades required to keep a GBBR running in the long term. If you have been holding out on a GBBR, waiting for something to pop up that has the right balance of affordability, efficiency and aftermarket support, now is the time!

From £549.99
  • Full metal construction
  • TM ZET System clone - Made by CGS
  • Licenced Daniel Defense trademarks from EMG

If you love the military look and like to dabble in GBBRs, the EMG CGS Daniel Defense DDMK18 GBBR should suit you perfectly. This full metal GBBR is licenced by Daniel Defense through EMG, boasting immaculate engraved trademarks across the design, and is based on the much-lauded Tokyo Marui ZET System internally, which is excellent news! 

The ZET system is widely regarded as the best GBBR internal system around, and CGS (CYMA Gas System) has made it even better, throwing in a generous complement of steel parts including the bolt carrier, trigger group and bolt catch. This means a longer lifespan than rival GBBRs and heavier recoil thanks to the added mass from the steel bolt carrier. Also inside is a 6.04mm tightbore inner barrel, a nice deal sweetener that improves gas efficiency and accuracy. If you've been weighing up getting into the GBBR game but the cost of fully upgrading a ZET System puts you off, this one has all the steel parts built in!

From £279.99
  • Full metal construction
  • GBBR - Super realistic recoil & controls
  • Ambidextrous charging handle, selector & mag release

If you have moved beyond the simple Airsoft AEG and you seek a greater challenge, more recoil and realistic handling, a Gas Blowback Rifle is what you need! The Golden Eagle 10.5" M4/AR-15 Rifle MC6590M GBBR boasts full metal construction, a 6.02mm tightbore inner barrel and choice steel parts to give this heavy recoiling platform a longer lifespan.

On the outside, the MC6590M is equipped with an M-LOK handguard, ergonomic pistol grip and a fully redesigned receiver with a refined magazine well angle, extended and ambidextrous controls, anti-rotation pin links and an enlarged trigger guard, giving you custom styling straight out of the box. If you are a recoil-seeking realism lover, you need this!

From £279.99
  • Full metal construction
  • GBBR - Super realistic recoil & controls
  • Ambidextrous charging handle, selector & mag release

If you feel the need for recoil, realism and a truly immersive firing experience, a GBBR is what you want! The Golden Eagle 14.5" M4/AR-15 Rifle MC6591M GBBR is based on the Western Arms/G&P WOC GBBR system but uses AEG inner barrels and HOP-up rubbers, making sourcing upgrades far easier than the original. The MC9561M also boasts full metal construction, a realistic manual of arms and absolutely ferocious recoil with each shot, making it the ideal next step for those who are tired of AEGs and want a more challenging skirmish experience.

On the outside, the MC6591M is dressed to impress, rocking an M-LOK handguard, ergonomic pistol grip and a fully redesigned receiver with a refined magazine well angle, extended and ambidextrous controls, anti-rotation pin links and an enlarged trigger guard. While it may be mass-produced in a factory, this thing looks like it is straight out of a high-end American AR custom shop!

From £599.99
  • Full metal construction
  • TM ZET System clone - Made by CGS
  • Licenced Daniel Defense trademarks from EMG

If you seek the immersive firing experience and challenging playstyle of a GBBR, the EMG CGS Daniel Defense DDM4® PDW SBR GBBR is worthy of your attention! This compact full metal PDW style AR boasts official licensing from Daniel Defense and full DD trademarks across the design, with awesome replicas of DD's latest furniture and controls.

Inside, the DDM4 PDW GBBR is based on the Tokyo Marui ZET system, the best of the best when it comes to GBBR internal design. CGS has added a steel bolt carrier, steel trigger parts and a short stroked buffer into the mix, meaning enhanced strength in all the key areas and an absolutely killer rate of fire, especially compared with other GBBRs.

If you plan to use a GBBR in CQB skirmishes, this is probably the best option out there right now without spending thousands and building it yourself. Licenced trademarks, a full metal build packed with steel internal parts with a 6.03mm tightbore to top it off, you won't find another out-of-the-box GBBR with a full-size rifle style bolt as fast as this!

From £549.99
  • Full metal construction
  • TM ZET System clone - Made by CGS
  • Licenced Noveske trademarks from EMG

Yet another officially licenced Noveske GBBR from EMG, aren't we lucky! This is the CGS Version of the Noveske 10.5" Gen.3 Shorty 300BLK GBBR, manufactured by CYMA's GBBR wing, known as CGS (CYMA Gas System). Based on the TM ZET System internally but with loads of steel internal parts thrown in, this is one of the best GBBR buys out there currently, and that is unlikely to change!

Being based on a TM design, this thing will shoot like a beast, and on the outside, things are even more spectacular. Boasting licenced Noveske Rifleworks trademarks across the design, full metal construction and flawless attention to detail make the CGS Noveske 10.5" Gen.3 Shorty 300BLK GBBR the ideal primary for any skirmisher who likes the challenge of running a GBBR in game and appreciates the high levels of authenticity and realism EMG provides. Whether this will add to your GBBR collection or you have decided it is time to move up to the most challenging yet rewarding platform in Airsoft, the EMG CGS Noveske 10.5" Gen.3 Shorty 300BLK GBBR will see you well equipped!

From £499.99
  • Full metal construction
  • 6.04mm Tightbore inner barrel
  • Tokyo Marui ZET system based internals

If you like an aggressive military-style AR, the CYMA CGS 14.5" M4A1 RAS SOPMOD GBBR should suit your needs. This full metal gas blowback rifle is based on the real steel M4A1 in SOPMOD Block 1 configuration, equipped with a CNC aluminium 20mm Picatinny quad rail patterned after the real steel KAC RAS. This is the perfect platform for a US Army impression!

Internally, this beast is based on the Tokyo Marui ZET system, giving you the best current option for GBBR internals with the widest aftermarket for upgrade parts. You won't need many upgrades though; with almost entirely steel trigger parts, a steel bolt carrier, a steel bolt catch and a 6.04mm tightbore inner barrel, the CGS M4A1 is probably the best out-of-the-box GBBR available currently!

From £499.99
  • Full metal construction
  • 6.04mm Tightbore inner barrel
  • TM ZET System clone - Ideal base for custom builds

If you're looking for the ideal GBBR to base your custom build on, you just found it! The CYMA CGS 10.5" M4A1 CQB GBBR is based on the original M4A1 in CQBR configuration, with the classic ribbed handguards, L.E stock and A2 pistol grip. This means either you can run it plane Jane in the classic configuration or build your own custom GBBR without wasting high-end parts.

Not that this platform lacks high-end parts! Inside you will find the same majority steel internal parts and 6.04mm tightbore inner barrel as its Noveske and Daniel Defense cousins. The most important aspect of this GBBR is its internal system which is based on the Tokyo Marui ZET system and enhanced by CYMA's GBBR wing, known as CGS. If you like thunderous recoil, a full metal build and externals just waiting for your own custom touch, the CGS 10.5" M4A1 CQB GBBR is the one to go for!

M4, AR-15 and M16 platforms are some of the most popular in the Airsoft community. At Patrol Base, we have a great selection of these rifles and their variants, including US Army M4A1 and M16 replicas. Not to forget the highly popular MK.18 MOD.1 rifle, an iconic AR-15 design used by Delta Force and the US Navy SEALs!

From gas-powered GBBR M4s with exciting recoil to high-performance AEG M4s which shoot perfectly in any weather conditions, we have an M4/AR-15 platform to suit all skill levels and playstyles, from CQB specialists to long-range Designated Marksmen. 

If you’re looking for an Airsoft platform to upgrade, an M4/AR-15 AEG is ideal thanks to its wide aftermarket support, customisation options and accessory attachment interfaces. Parts are easy to replace and accessories can be mounted straight away in most cases; perfect for those who dream of their own custom Airsoft gun!

If you're struggling to choose which M4 is right for you, read our blog post and watch our video about M4 Assault Rifles

Shop our huge selection of AR-15, M16 and M4 Airsoft AEGs and GBBRs online or visit us at our store in Huddersfield to see the range in person!