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 LR-308 Finish Your Build Kit - Adapative Tactical Stock
LR-308 Finish Your Build Kit - Adapative Tactical Stock

LR-308 Finish Your Build Kit - Adapative Tactical Stock

On sale: $324.99 $234.99
Retail Price$324.99
You Save:$90.00(28%)
Part Number: FYK-20241
Availability: In Stock.
LR-308 Finish Your Build Kit - Adaptive Tactical Stock

Adaptive Tactical AR-15 EX Performance 

Adjustable Stock 
Reduces Felt Recoil 

Advanced design and high-impact, polymer construction make the EX Performance Adjustable Stock the ideal upgrade for your AR-15 or M4. The EX Performance M4-style Stock features an easy-to-reach rapid adjust lever for custom length-of-pull, and a molded in non-rust standard sling swivel attachment spot. Durable polymer construction with non-slip vented rubber recoil pad, oversized extra strength adjustment pin, and sleek industrial design.


·         Designed for owner installation
·         M4-style stock with adjustable length-of-pull
·         Easy to reach rapid adjust lever
·         Integrated QD swivel attachment
·         Compatible with Mil-Spec sized extension tubes

Davidson Defense USA-Made Mil-Spec Buffer Tube

Precision Machined from 6061-T6 Aircraft-Grade Aluminum
Matte Black Anodizing with Type III Class II Hard Coat for Best Wear Resistance
Tightest tolerance control for zero-gap fit with polymer stock and receiver to meet most demanding quiet operations
100% Proudly Made in the USA
1.15" Diameter (Mil-Spec); 1.17" Diameter (Commercial)
6 locking positions
Length is 7.25"
Tube only

Spring Dynamics .308 AR-10 Carbine Extra Power Buffer Spring 

This Chrome Silicon recoil spring is made by Spring Dynamics to the highest quality standards available. It is stress relieved for long service life and Moly-Plated for corrosion resistance. These springs last for an incredibly long time and do not lose their strength. Test samples of these springs have been tested for over 100,000 rounds without a significant deterioration in power, performance or reliability.
The Extra Power Buffer Spring is designed for .308 AR Carbine Platforms that use the standard 7" depth M4 buffer tubes and the short 2.5" .308 buffer. Such as DPMS, CMMG, Bushmaster (post 2010), Mega, SA Defense, Colt 901 and many others. The extra power slows the bolt carrier's rearward travel and chambers the next round with more authority. It also works very well in AR-10 rifles with the 7.75" internal buffer tube length and the 3.25" buffers. It is the correct spring to use in either one. If you want a lower power spring in the 7.75" tube with 3.25" buffer you can also use the Sprinco Red spring. But the Orange spring is the stiffer of the two.

Highest Quality Chrome Silicon Spring available
Stress Relieved
Extremely long service life with no degradation in performance
Extra Power spring weight

Omega Mfg. LR-308 Collapsible Stock Buffer

Drop-in installation
Uses standard recoil spring
Fits AR-10/LR-308 with collapsible stock
Length: 2.5"
Weight: 3.7 oz.

Tactical Superiority AR .308, LR-308 Mil-Spec Quality Lower Parts Kit (LPK)

Fits All .308 AR Rifles (Except Armalite)

Made by a Major US Government Contractor

Made to exact Mil-Spec

100% American Made !!

Basic AR-15 lower parts kit. It includes all the small parts needed to complete your lower. You will just need a stock kit and an upper. This kit includes a standard right hand safety selector.

What sets these lower parts kits apart from most  other .308 AR lower parts kits on the market is these kits contain no brittle MIM cast parts. All parts in this kit are forged cast parts giving them superior strength extreme durability & a much longer service life.

Will This Fit My Gun? 99.9% YES. And What Is LR-308?

DPMS Created One Of The Size Platforms That All The Rifles Are Built From. At The Time There Was Not A Mil-Spec Standard. Now The US Government Has Adopted The LR-308 Standard And Put It In The SR-25 Military Rifle By Knights Armament, Thereby Cementing The DPMS LR-308 Standard Forever So 99.9% Of All The .308 AR Firearms Manufactured Today Make There Rifles Patterned From The LR-308 Pattern Except 2 Companies (Armalite & Rock River that Use There Own Proprietary Systems & Sell Only Assembled Rifles So The Possibility You Have One Of Those Uppers & Lowers Is Rare Since They Only Produce Full Guns). 

All of the forged fire control parts contain the US Forger's mark, proving that they are indeed MFG by a USA forging company. Most of the kits in this price range have no forger's mark on each of the fire control parts.

(BEWARE Most Kits that do not have these forging marks are manufactured outside of the country with inferior materials and forging processes).

This kit contains superior American made springs. Each spring is gold tint in color treated with anti-corrosion finish so that when your rifle is subjected to moisture it will keep from getting corroded where even stainless steels can become over time weakened from corrosion where springs diameter is small and a small amount of corrosion can take you out of the game.

(Beware of zinc coated bright silver springs these springs are made of inferior materials and become weak and loose there needed tension so they can fail much sooner).

This kit contains real brass detents that are individually machined so they fit and not wear any other internal parts they come in contact with. Unlike steel detents that cause excessive wear and also cause to rust the part they touch and also the detent themselves where brass detents give superior service life and are to full Mil-Spec  

So if you want an ultra dependable parts kit for your new 308 AR rifle then you have found the right one. This parts kit comes with a full lifetime warranty and will be the only kit you will ever need to buy since it will last a lifetime.

All parts are Mil-Spec quality.

Made in the USA

The Lower Parts Kit Includes:
Trigger Guard
Trigger Guard Roll Pin
Standard Trigger
Trigger Spring
Trigger Pin
Hammer Spring
Hammer Pin
Disconnector Spring
Safety Selector
Selector Spring
Selector Detent
Bolt Catch Spring
Bolt Catch
Bolt Catch Roll Pin
Magazine Catch Button
Magazine Catch
Magazine Catch Spring
Front Pivot Pin
Pivot Pin Detent Spring
Takedown Pin
Take Down Detent
Buffer Retainer Pin
Buffer Retainer Spring
Black A2 Pistol Grip
Pistol Grip Screw
Pistol Grip Lock Washer

US Tactical Ind. AR-15 M16 Mil-Spec Receiver End Plate
Maintains Proper Alignment of Stock & Buffer Tube

M4-style receiver plate includes the engagement tab required to align the buttstock and buffer tube with the lower receiver on carbine models. 

Precision, fine blanking process ensures precise edges and superior flatness for correct fit and solid installation.

Phosphate Finish
Made of 4140 Hardened Steel

Davidson Defense AR-15  Carbine Castle Nut

Fits both Commercial and Mil-Spec tubes. It's always good to have a spare!

Recoil Technologies Ion Nitride LR-308 AR .308 6.5 Creedmoor 

Bolt Carrier Group With Forward Assist Notches

Fits All LR-308 Or DPMS Type Platform Rifles 

ADK Defense Is The Leading Supplier For The Armed Forces For Bolt Carriers. Tried & True, This .308/6.5 Creedmoor Bolt Carrier Group Is Engineered & Designed To The Highest Tolerances & Military Specifications. The superior nitride QPQ Ion Finish Ensures Long Term Durability & Lubrication.

This Bolt Carrier Is The Very Best You Can Get For Your LR-308 Platform Gun.

Most Of the ,308 AR Rifles On The Market Today Are The LR-308 Platform or DPMS Platform.

Certified For Use By US Military & Law Enforcement  


LR-308 Carrier DPMS compatible

8620 heat treated (case hardened to SAE-AMS-6875). QPQ / nitride / melonite coated


- 9310 Heat treated (case hardened to SAE-AMS-6875) with additional cryo freeze for extra strength. 

- Shot peened precision ground diameters.

- Magnetic particle inspected to ASTM E1444 aircraft quality inspection procedure for molecular soundness and longer life of the Bolt.


- Aircraft quality alloy steel shot peened.

- Heat treated to military drawing specification SAE-AMS-6875.

- Phosphated to of MIL-STD-171.

Gas key:

- Gas key bolt, grade 8 fully knurled.

- Gas key, aircraft quality steel heat treated to SAE-AMS-6875 QPQ HT PROCESS .

Cam pin:

- Precision machined.

- Heat treated to SAE-AMS-6875.

- Phosphated to of MIL-STD-171

Firing pin:

- Machined and precision ground for accuracy

- Heat treated to military drawing specification per SAE-AMS-6875

- Chrome lined per 1.2.2 of mil-std-171

Firing pin retaining pin:

- Unique designed custom steel pin contouring the carrier body.

- Heat treated to SAE-AMS-6875.

- Phosphated to of MIL-STD-171.


- Precision machined.

- Heat Treated to SAE-AMS-6875.

- Phosphated to of MIL-STD-171.

Gas rings:

- Stainless Steel per Mil-Spec 3 Piece design.


To assure the highest degree of consistency and reliability, we invest in premium extractor springs from Tactical Springs LLC / Sprinco USA along with a Mil-Spec Black Viton Extractor O-Ring per MIL-R-83248C. The springs are constructed from Chrome Silicon wirestock, a high tensile strength alloy ideally suited for high heat and high cyclic rate applications. The springs are heat treated, stress relieved, moly-plated, and most importantly, Cryogenic Processed post winding. While Cryogenic Processing typically extends the duty cycle of Chrome Silicon springs 3X - 7 X, these extractor springs have proven to surpass that multiplier. Unlike Music Wire or 17-7PH Stainless extractor springs which can require replacement at 2,500 to 5,000 round intervals for maximum reliability, this is likely to be the only extractor spring you’ll require for the life of the bolt! Numerous accounts have been recorded from customers with round counts in excess of 100,000 cycles.

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