Guski Works llc.

A garage based side venture with COLD FINGER Fingertip Aperture mk 1 at the core, bringing rapid fire capability to the average person. Many semi auto firearms and other projectile devices require no modifications or attachments when used in conjunction with Fingertip Aperture.

Fingertip Aperture


Fingertip Aperture is a "NOVELTY" hand posturing device, that configures the users hand(s) in such a way as to help the user more easily learn the skills (through muscle memory and practice) required to recoil fire a two handed, semi automatic firearm or other projectile devices. (Makes LEARNING to recoil fire easier).

For best results while learning the technique, this item should be held with the fingertips only, and should not come in direct contact of the projectile device used in conjunction with.

The universal, ambidextrous design of COLD FINGER allows for use in conjunction with a large variety of semi auto platforms, such as AR, AK, Mini14, sub pistols, airsoft, paintball, and more. Accommodates pistol grips and (hunting)rifle stocks.

Although being handed (LEFT and RIGHT) the universal design of DEAD FINGER allows for use in conjunction with many handgun platforms.

Fingertip Aperture was specifically designed to NOT be a firearm part or attachment, to alleviate the need for modification of most firearms, allowing use along side many OFF THE SHELF, factory stock, semi autos.

Fingertip Aperture is NOT intended to be a permanent solution to anyone's needs. Like when learning to ride a bike, the training wheels are discarded when the skills are developed. This too is the intention of Fingertip Aperture. This device is to be used as a technique training platform for timing and muscle memory as it becomes cumbersome after one has developed the skills of recoil fire.

NOT ALL semi-automatics are capable of recoil fire, but most can be made capable.

Always practice safety when handling any firearms.

Rapid fire capability for the price of filling a magazine.

Recoil required. Smooth action and short trigger throw recommended.

WARNING: Users will soon need more ammo.

Colors may vary.


Guski Works cannot be responsible for items delivered to unattended or unsecure drop off locations.


Search GuskiWorks at cults 3d for prototype file.

Search "CONTACT" for email

Tips to avoid frustration when attempting to recoil fire.

1- Have sufficient recoil

Overall recoil or kick distance (in chosen firing position) MUST EXCEED trigger pull/reset distance. Excessive weight (bull barrels and large attachments) and/or, backstop/shoulder pressure may impede distance of rearward travel required for recoil to reset the trigger between each pull, causing the shooter to reset trigger with finger instead of recoil, between pulls or bursts.

Recoil at the bolt/slide must be sufficient enough to work the action completely with no backstop.

Remedy: Lighten platform or shorten trigger pull/reset distance.

Clean, polish, lube action and gas system. Lighten recoil spring tension.

Use heavier projectiles.

2-Have two handed semi-automatic firearm or other projectile device.

Recoil firing can only be achieved with semi auto or binaries. Bolt action, lever action, break action, and pump action will not be capable of recoil fire by causing shooter to manually load cartridge or shell after each pull of the trigger.

Remedy: Get a semi automatic or binary.

3-Have good maintenance or firearm/projectile device hygiene

A dirty chamber and/or poorly maintained action as well as too heavy or unworn recoil springs will slow down bolt/slide reciprocation speeds causing short bolt/slide travel distance and/or hammer ride/light strike, as well as slow ejection of spent casings, causing stovepipes or double stacking.

Remedy: Clean chamber, maintain/clean/lubricate all moving parts and polish action where it may have rough or sticky areas. Change parts as necessary to achieve full action and/or shorter/lighter trigger throw. Some magazines may rub bolt causing slow reciprocating speed as well.

4- Have a decent or good trigger

Revert back to 1. Recoil and trigger quality go hand in hand when attempting to recoil fire. When it comes to the trigger, shorter throw/reset and lighter weight of trigger pull are generally better for recoil firing, allowing a heavier weighted platform to be more capable of recoil fire. It also allows the shooter to use more shouldering pressure. Long pull/reset and heavier pull weight requires more recoil to achieve recoil fire.

Remedy: Polish or change trigger/fire control group. Single stage at 3 lb. trigger recommended for drop ins.

5- Hand and finger positioning

Recoil firing is most easily achieved by holding active (trigger) hand stationary with a loose grip while pulling trigger with other hand by pushing projectile device forward. A spring action can be applied by positioning forearm of inactive hand 45 degrees or so towards perpendicular of the barrel. While with smaller projectile devices with a finger stop, the same action can be achieved by pushing forward with a single forefinger. Handguns require use of the grip. Trigger finger position can also change the weight of the trigger pull through leverage, just as it changes the pull/reset distance. Higher positioning increases weight of pull while shortening pull reset distance. A lower position (towards the tip) lowers weight while increasing pull/reset distance. Tight grip, flinch, and soft trigger finger can impede the hand posture necessary to recoil fire.

Remedy: Get a Fingertip Aperture From GUSKI WORKS