Red Grin MilSim and R/C Airsoft Parts Pistons

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Red Grin is a veteran owned and operated business and Michigan's prime provider of high-end Military Simulation gear, Paintball, Airsoft and Radio Control hobby store, providing more than just products.

Pistons

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HurricanE M120s Tune-up Kit for M4A1
HurricanE M120s Tune-up Kit for M4A1
[ more information ]

$35.00

JB Unicorn M120 Upgrade/Tune Up Kit for M4
JB Unicorn M120 Upgrade/Tune Up Kit for M4 AEG
[ more information ]

$72.00

Reinforced Full Teeth Piston
JB Unicorn Full Teeth Aluminum Piston, features removable/replaceable steel teeth and a light weight aluminum piston body.
[ more information ]

$31.45

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Changed your mind? NO problem! Your satisfaction is fully guaranteed!
We will issue a refund for any reason within 30 days as long as the item is in original condition, sealed, never opened, nor used.
If item(s) has been opened, unsealed, or used it may be returned only in case of defects and for exchange only.
Defective item(s) (on Red Grin warranty) must be returned in original packaging, supplemented with a description of the problem(s) experienced.
Defective item(s) (on manufacturer direct warranty) must be returned directly to manufacturer for an exchange or repair. Please contact manufacturer first to troubleshoot the item.
All returns, exchanges and warranty claims must accompany our RMA which can be created from our Returns information page.
Customer must pack defective items being returned as if they were new and working with all UPC codes, manuals, software, warning stickers - as in original condition. Failure to do so may invalidate both the RMA and the warranty.
Shipping fees and/or return shipping costs are not refundable.
Please consult our Warranty & Returns page for complete return policy details.

Specialty Services include:

Executive protection,
High risk security operations,

Tactical pistol I, II
Concealed carry - techniques and manuever
Pistol manupilation

Hostage rescue I, II, III
Military/LE sniper I, II
Terrorism awareness I, II
Counter terrorism I, II