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# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Home Manufacturers Sprinco USA

Sprinco USA

Sprinco USA Rifle Parts
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Sprinco USA Products

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SPRINCO USA SPRING KIT-STD BUFFER & HD 5-COIL BOLT EXTRACTOR SPRING
M4 CARBINE CS STANDARD SPRING KITS

SPRINCO USA

In stock

£39.90 * £36.90 - £39.90*

The spring is designed to match the performance of a new Mil-Spec M4 Carbine Spring for reliable operation in any 5.56 Carbine.
It is ideal for those who want to maintain "fresh" Mil-Spec spring performance without frequent replacements.
SPRINCO USA's spring is a suitable option for shooters who prefer not to upgrade but desire consistent, long-term reliability.

SPRINCO USA ENHANCED SUPER DUTY EJECTOR SPRING- STANDARD POWER 3PK
AR-15 ENHANCED SUPER DUTY EJECTOR SPRING

SPRINCO USA

In stock

£19.90 * £11.90 - £19.90*

Ejector Springs

Sprinco’s Ejector Springs are heat treated, stress relieved, and cryogenically processed for durability.
These springs are plated with a molybdenum disulfide formulation for enhanced performance.
Designed to match the loads of new Mil-Spec springs and can withstand heat up to 750ºF while maintaining their performance specifications.

SPRINCO USA SPRING KIT STD BUFFER SPRING&ENHANCED 4COIL EXTRACT SPRING
M16 RIFLE CS STANDARD SPRING KIT

SPRINCO USA

In stock

£39.90 * £36.90 - £39.90*

The Green spring is suitable for A1/A2 fixed stock rifles and VLTOR A5 buffer tubes, optimized for .223, 5.56, and similar calibers.
It may also be used for heavier calibers in long barrel rifles, but may require an H2 or H3 buffer for calibers like .308.
For over gassed heavier caliber guns with rifle length tubes, the Red or Orange carbine springs with a standard carbine buffer and spacer are recommended.

SPRINCO USA SPRING KIT- XP BUFFER SPRING W/ DUAL EXTRACTOR SPRING SET
AR .308 PATTERN CARBINE CS SPRING KIT

SPRINCO USA

In stock

£42.90 *

The AR .308 Pattern Carbine CS Spring Kit by Sprinco USA is designed to address M4 carbine reliability issues, especially for operations in Eastern Asia.
The Red spring in the kit has approximately 25% greater load capacity than the White spring, enhancing performance for various calibers.
Users should refer to tuning procedure reference documents before seeking recommendations for the spring's use with specific firearms and ammunition loads.

SPRINCO USA UPGRADE KIT-XP 5-COIL EXTRACTOR SPRING/INNER SPRING 3PK
AR .308 DUAL EXTRACTOR CS SPRING UPGRADE KITS

SPRINCO USA

In stock

£24.90 * £14.90 - £24.90*

Extractor Springs

SPRINCO USA's AR .308 Dual Extractor CS Spring Upgrade Kits feature heat-treated, cryogenically processed chrome silicon wirestock springs with molybdenum disulfide plating.
The XP 5-Coil spring offers a heavier load than OEM springs, eliminating the need for D-Fender™ rings or CRANE Viton O-Rings, and is reliable across all 5.56 BBL lengths.
These springs maintain performance even under extreme duty cycles and temperatures up to 750°F, and may be the only extractor springs needed for the life of your bolt.

SPRINCO USA UPGRADE TRIPLE KIT-3)4-COIL EXTRACTOR SPRING, INSERT,O-RING
M16/M4 EXTRACTOR SPRING UPGRADE KITS

SPRINCO USA

In stock

£23.90 * £12.90 - £23.90*

Extractor Springs

Sprinco’s Extractor Springs are made from heat-treated chrome silicon, cryogenically processed, and molybdenum disulfide plated for durability and performance.
The XP 5-Coil spring provides a heavier load than OEM springs, eliminating the need for additional D-Fender™ rings or CRANE Viton O-Rings.
Enhanced 4-Coil springs are recommended for 18" or longer barrels for those who reload, while the 5-Coil spring is reliable for all 5.56 barrel lengths but may be too strong for certain bolts.

SPRINCO USA REDUCED POWER KIT BUFFER XP 5-COIL BOLT EXTRACTOR SPRING
M4 CARBINE CS REDUCED POWER SPRING KITS

SPRINCO USA

In stock

£39.90 * £36.90 - £39.90*

Sprinco USA's Reduced Power Buffer Spring, known as the Yellow spring, is about 20% lighter than the White spring.
The Yellow spring was developed through collaboration with ammunition manufacturers and gunsmiths and was the preferred choice out of four samples.
For guns requiring a lighter spring, it is recommended to enlarge the gas port for improved reliability, and the Yellow spring is suitable for low power training rounds.

SPRINCO USA SPRING KIT-XP BUFFER W/ HD 5-COIL BOLT EXTRACTOR SPRING
M4 CARBINE/6.8 CS SPRING KIT

SPRINCO USA

In stock

£39.90 *

The Sprinco USA Extra Power Buffer Spring is designed to address M4 carbine reliability issues, specifically for challenges faced in the Eastern Asia Theatre.
The Red spring has design loads approximately 25% greater than the White spring, enhancing performance for various calibers including 9mm, 6.8 SPC, and .500 Beowulf.
Before using, refer to the tuning procedure reference documents, as the optimal spring choice may vary based on individual weapon characteristics and ammunition loads.

SPRINCO USA LUCKY 13 BLACK EXTRACTOR INSERT & VITON O-RING 13 PK
AR-15 EXTRACTOR INSERTS & O-RINGS MIL-SPEC

SPRINCO USA

In stock

£21.90 * £9.90 - £21.90*

Extractor Springs

Sprinco USA produces Mil-Spec extractor inserts and O-rings, exceeding standard requirements, using their own high-quality molds and materials.
All Sprinco products are made in the USA, ensuring superior grade base materials over commercial or foreign imports.
The Black Extractor Spring Inserts and Viton CRANE O-Rings meet specific military specifications (MIL-PRF-6855-REV G and MIL-R-83248C).

SPRINCO USA AR-15 30-ROUND MAGAZINE SPRING, FLAT WIRE
AR-15 30-ROUND MAGAZINE SPRINGS

SPRINCO USA

In stock

£18.90 * £18.90 - £38.90*

Magazine Springs

Flat wire magazine springs support indefinite storage at full capacity without spring fatigue and are designed to prevent over-compression with anti-tilt followers.
These springs ensure a uniform feed rate and improved support for the top 4 rounds, while being easier to load compared to round wire springs.
Compatible with most magazine bodies and anti-tilt followers including USGI, Magpul, Lancer, and Hexmag, with exceptions like Brownells USGI Tan followers and some ETS and HK mags.

SPRINCO USA ENHANCED 4-COIL BOLT CARRIER EXTRACTOR CS SPRING 3-PAK
M16/M4 ENHANCED CARRIER EXTRACTORS

SPRINCO USA

In stock

£19.90 * £9.90 - £19.90*

Extractor Springs

Sprinco USA's Extractor Springs are heat treated, stress relieved, and cryogenically processed for durability, with a molybdenum disulfide coating for performance.
The 5-Coil spring is ideal for all 5.56 barrel lengths but may be too strong for 18"+ barrels or bolts with very tight tolerances, while the 4-Coil is recommended for longer barrels and brass reloading.
These extractor springs can withstand temperatures up to 750°F and are designed to be the only springs needed for the life of your bolt, with no need for D-Fender™ rings when using the 5-Coil version.

SPRINCO USA SPRING KIT-XP BUFFER SPRING W/ DUAL EXTRACTOR SPRINGS
AR 308 M4 EXTENSION TUBE CS SPRING KIT

SPRINCO USA

In stock

£42.90 *

The Orange buffer spring is designed for heavy BCG carbine applications in .308/6.5 CM/.260 Rem calibers using standard 7" M4 extension tubes.
It is suitable for tuning over-gassed carbines in AR-10 pattern tubes with 3.25" buffers or for lesser calibers like 5.56.
This SPRINCO USA spring kit includes an extra power buffer spring and dual extractor springs for enhanced performance.

SPRINCO USA M4 CARBINE BUFFER SPRING
M4 CARBINE CS INTERMEDIATE SPRING KITS

SPRINCO USA

In stock

£36.90 * £34.90 - £39.90*

The Hot White spring was an unintended production variation that falls between the White and Blue spring load specifications.
It became a valuable solution for customers seeking a performance level in-between the existing White and Blue springs.
This spring is suitable for those preferring Mil-Spec carbine springs but still want enhanced performance.

SPRINCO USA SPRING KIT-XXP BUFFER SPRING & XP 5-COIL EXTRACTOR SPRING
M4 CARBINE CS SPRING KIT

SPRINCO USA

In stock

£39.90 *

The Orange extra extra power buffer spring is designed for heavy calibers like .308 / 6.5 CM / .260 Rem in carbine DPMS Pattern applications.
It is suitable for use with standard 7" depth M4 extension tubes and short 2.5" buffers, including aftermarket "heavy buffers".
The spring is also beneficial for tuning over-gassed carbines of any equivalent heavy calibers in AR-10 pattern tubes with 3.25" buffers or for lesser calibers such as 5.56.

SPRINCO USA AR-15 BOLT RING / GAS RING 9PK
AR-15 BOLT & GAS RINGS

SPRINCO USA

In stock

£15.90 * £8.90 - £15.90*

Gas Rings

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