Knight's Armament KS-1 13" GBB Replica - Black [WELL PRO]
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Technical data
Weight 2500 g Color black Material ABS, metal, steel Fire mode auto, single Magazine model real-cap Magazine material polymer Accumulator included in set NO Warranty period 12 months Blowback yes Camouflage black EAN 5904420022428 Ammo .23g, .25g Serial number YES Length 790 mm Magazine capacity 30 BBs Length of internal barrel 330 mm Muzzle energy 1.14 J Muzzle velocity 350 FPS with 0.20g BBs Replica Model AR15 / M4 / M16 Airsoft Gun Body material metal Manufacturer: WELL PRO Code: WE13-1 GM-BK -
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KS-1 Gas Blowback Replica under Knight's Armament License - by WELL PRO is a fully metal construction designed with realistic gameplay in mind. The model features a GBB system that ensures authentic bolt operation, an M-LOCK front handguard for mounting accessories, and a full set of ambidextrous controls. The adjustable SF-type stock and easy access to hop-up adjustment on the RIS rail make this replica an ideal choice for milsim, CQB, and dynamic outdoor games. Two GBB magazines are included in the set
KS-1 WELL PRO Gas Blowback Replica - realism and build quality
The AR15-type GBB replica from the renowned manufacturer WELL PRO is a proposition for airsoft players who value realistic operation, solid construction, and high compatibility with accessories. The model is manufactured under the Knight's Armament license. The replica is made of metal, which ensures proper weight, durability, and authentic handling. Thanks to the GBB (Gas Blow Back) system, the replica imitates the operation of a real firearm - the bolt cycles with every shot, significantly enhancing the realism of gameplay. Well Pro uses its own steel internal components, which significantly increase the durability and service life of the replica. The trigger itself features a short pull and a quick reset, which positively affects the dynamics of fire. The manufacturer has also implemented a patented magazine design inspired by VFC AR15/M4 solutions, ensuring stable gas delivery and high reliability of the entire system, which directly translates into the overall performance of the rifle.M-LOCK System
The replica is equipped with a front handguard featuring the M-LOCK system, allowing the mounting of various accessories such as flashlights or a vertical grip. On top, there is a full-length RIS rail for mounting a red dot sight or a scope. Importantly, the hop-up adjustment is located on the upper RIS rail, making it easier to fine-tune the BB trajectory.A major advantage is the set of ambidextrous controls - magazine release, fire selector, bolt catch, and an ambidextrous charging handle, making the replica fully user-friendly for both right- and left-handed shooters.
Set contents:
- Replica
- 2 GBB magazines
Recommended accessories:
Safety & Usage Guidelines
Please read the following information for safe product use:Report safety issue · Responsible person & manufacturer

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