|-
| '''Ported barrel''' || [[Recoil]] -1<br/>[[Weapon accessories#Silencers|Silencers]] are rendered ineffective || || '''450''' || See [[Maze Customs:Major mods#Notes|note 1]]
|}
'''Barrel threading type'''
{| class="wikitable sortable" style="font-size:9pt"
|-
! Configuration name !! Effects !! Corresponding base models !! Cost ([[File:Parallar symbol.png|10px]]) !! Description
|-
| '''No threading''' || Muzzle: None || [[Colt Delta Elite]]<br/>[[Colt M1911A1]]<br/>[[SIG 1911FN]]<br/>[[Springfield 1911RO]] || '''50''' || Original barrel profile with no threading.
|-
| '''Standard threading''' || Muzzle: Standard devices || || '''150''' || Modern muzzle threading system for mounting Standard muzzle devices.
|}
|-
| '''Ported barrel''' || [[Recoil]] -1<br/>[[Weapon accessories#Silencers|Silencers]] are rendered ineffective || || '''450''' || See [[Maze Customs:Major mods#Notes|note 1]]
|}
'''Barrel threading type'''
{| class="wikitable sortable" style="font-size:9pt"
|-
! Configuration name !! Effects !! Corresponding base models !! Cost ([[File:Parallar symbol.png|10px]]) !! Description
|-
| '''No threading''' || Muzzle: None || [[Para P-14]]<br/>[[Para P-16]]<br/>[[Para P-18]] || '''50''' || Original barrel profile with no threading.
|-
| '''Standard threading''' || Muzzle: Standard devices || || '''150''' || Modern muzzle threading system for mounting Standard muzzle devices.
|}
|-
| '''Ported barrel''' || [[Recoil]] -1<br/>[[Weapon accessories#Silencers|Silencers]] are rendered ineffective || [[Glock 18C]] || '''450''' || See [[Maze Customs:Major mods#Notes|note 1]]
|}
'''Barrel threading type'''
{| class="wikitable sortable" style="font-size:9pt"
|-
! Configuration name !! Effects !! Corresponding base models !! Cost ([[File:Parallar symbol.png|10px]]) !! Description
|-
| '''No threading''' || Muzzle: None || [[Glock 17]]<br/>[[Glock 18C]]<br/>[[Glock 22]]<br/>[[Glock 31]] || '''50''' || Original barrel profile with no threading.
|-
| '''Standard threading''' || Muzzle: Standard devices || || '''150''' || Modern muzzle threading system for mounting Standard muzzle devices.
|}
| '''Ported barrel''' || [[Recoil]] -1<br/>[[Weapon accessories#Silencers|Silencers]] are rendered ineffective || || '''450''' || See [[Maze Customs:Major mods#Notes|note 1]]
|}
'''Barrel threading type'''
{| class="wikitable sortable" style="font-size:9pt"
|-
! Configuration name !! Effects !! Corresponding base models !! Cost ([[File:Parallar symbol.png|10px]]) !! Description
|-
| '''No threading''' || Muzzle: None || [[Glock 20]]<br/>[[Glock 21]] || '''50''' || Original barrel profile with no threading.
|-
| '''Standard threading''' || Muzzle: Standard devices || || '''150''' || Modern muzzle threading system for mounting Standard muzzle devices.
|}
=== Fire control (Glock-LF) ===
|-
| '''XM3 barrel''' || 18.5 inches || Weight tier -1 || || '''600''' || Installs a special purpose 18.5 inch barrel, meant to reduce overall length and weight without sacrificing too much performance.
|}
'''Barrel threading type'''
{| class="wikitable sortable" style="font-size:9pt"
|-
! Configuration name !! Effects !! Corresponding base models !! Cost ([[File:Parallar symbol.png|10px]]) !! Description
|-
| '''No threading''' || Muzzle: None || [[Remington Model 700 XCR II]]<br/>[[Remington Model 700 ADL]]<br/>[[Remington Model 700 BDL]]<br/>[[Remington M24]] || '''100''' || Original barrel profile with no threading.
|-
| '''Standard threading''' || Muzzle: Standard devices || || '''200''' || Modern muzzle threading system for mounting Standard muzzle devices.
|}