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Rainier Arms

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Gunsmithing Tools

Ergo AR15 Armorer Block

$24.99

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Advanced Armament Company (AAC) Blackout / Brakeout Muzzle Device Tool

$29.99

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Warren Innovative Technologies 10TK "Total Kit" Rugged All-In-One Socket

$50.00

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Real Avid Smart Torq Precision Driver

$79.99

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Ascalon Arms CZ Scorpion EVO 3/3+ Barrel Nut Tool

$17.40

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Fix It Sticks Combination Kit W/ Torque Limiters

4.2 star rating 5 Reviews

$264.00
Four Payments of $66.00 with . Learn More

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Fix It Sticks All-In-One Torque Driver Kit

5.0 star rating 3 Reviews

$108.00

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Grayguns Sig Sauer P320 Armorer's Block
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4.8 star rating 30626 Reviews

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Verified Reviewer

0.0 star rating

06/30/25

Review by Anonymous User

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06/30/25

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John R.
Verified Buyer

5.0 star rating

06/29/25

You will not be disappointed

Review by John R. on 29 Jun 2025 review stating You will not be disappointed
The product is in built with attention to detail and it’s quality through and through! Remarkable !!!

On OA Defense OA 2311 Pro 9mm Ported Pistol - High Desert Sage

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06/29/25

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Brian K.
Verified Buyer

5.0 star rating

06/29/25

Radian ramjet for sig p365xl

Review by Brian K. on 29 Jun 2025 review stating Radian ramjet for sig p365xl
Great stuff as usual from radian

On Radian Weapons Afterburner & Ramjet Barrel Combo For Sig P365XL 3.7" - Bronze

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06/29/25

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Jarod
Verified Reviewer

5.0 star rating

06/29/25

Works!

Review by Jarod on 29 Jun 2025 review stating Works!
Had to try it, on a . 223 16" build first. Ended up watching many you-tube videos and all pretty much say use a heavy buffer. I tried two different buffers, and my 5. 3oz stopped the light primer strikes (bolt bounce) and allowed the mag to empty and last round locked the bolt to the rear. I paired this with a CMMG trigger having the open back as recommended from multiple users (again info from you-tube). I recommend a comp, to help reduce muzzle rise, maybe something like the Lantac Dragon, ported near its top. Will be trying my lower on other uppers soon.

On Atrius Development 3 Position Super Selektor Safety

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06/29/25

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Francisco A.
Verified Buyer

5.0 star rating

06/29/25

A++

Review by Francisco A. on 29 Jun 2025 review stating A++
A++

On Sharps Bros Echelon Improved Grip Module - Black / Brazilian Cherry

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06/29/25

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Edwin R.
Verified Buyer

5.0 star rating

06/28/25

Great Quality

Review by Edwin R. on 28 Jun 2025 review stating Great Quality
Great quality, reminds me of Mega Arms.
Definitely recommend and will buy more.

On Rainier Arms Forged A4 Upper Receiver- GEN2

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06/28/25

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$54.99

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Knight's Armament Company (KAC) Barrel Extension Action Wrench

5.0 star rating 1 Review

$101.35

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Sig Mechanics MSAFE-T V2 P320 Manual Safety Conversion Tool Kit

5.0 star rating 2 Reviews

$49.99

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Geissele AR15/M4 Reaction Block

5.0 star rating 2 Reviews

$204.00
Four Payments of $51.00 with . Learn More

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Geissele 5.56/.223 Reaction Rod

$101.00

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Magpul BEV Block - AR15 / M4

4.8 star rating 8 Reviews

$47.45

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Geissele 7.62/.308 Reaction Rod

5.0 star rating 2 Reviews

$203.00
Four Payments of $50.75 with . Learn More

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Arisaka Optic Leveler Combo

5.0 star rating 8 Reviews

$35.00

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