Accessories Page

Barrel Nuts, Superlative Arms Gas Blocks, Rubber City Armory Bolts in all sizes, B.A.R.T. Tools for AR15 & AR10, T-Shirts with more to come!



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B.A.R.T 1.0

All B.A.R.T. COMBO Purchases include one (1) .4oz bottle of lapping compound at no extra cost. Square the face of your upper to the BCG. Make your barrel in line with your upper.

Barrel Nuts for Shoulderless Prefit Barrels

Stainless Steel Barrel Nuts. Available for Savage Small Shank, Remington 700 "Rem/Age", Bighorn or Remington 783.

Tikka T3 Barrel Nut/(Wrench Optional)

Patriot Valley Arms Barrel Nut System for the Tikka T3. Wrench optional for an additional $15.

B.A.R.T 2.0

All B.A.R.T. COMBO Purchases include one (1) .4oz bottle of lapping compound at no extra cost. Step 1: Tighten BART's head in a bench vise on the "Flats" provided. Step 2: Put barrel in upper. Slide barrel nut over barrel and finger tighten barrel nut to upper. Step 3: Slide upper onto BART 2.0 until barrel extension locks onto the teeth Step 4: Tighten barrel nut to upper with barrel nut wrench to specifications stated by handguard manufacturer.

Lapping Compound .5 oz

For use with the X-caliber B.A.R.T Tools

Rubber City Armory

High Quality BCG's & Bolts (Non-Stock Item). If purchased with a proper-chambered/matching AR barrel on the same order, the bolt will be head-spaced to that barrel and that barrel will receive our 1MOA or better guarantee. --NOTE: LAST 4 LINE ITEMS IN DROPDOWN MENU ARE CARRIER ONLY---NOTE: MOST CARRIERS WILL SHIP WITH X-CALIBER LASER ENGRAVING LOGO INSTEAD OF RCA's LOGO


What is more custom than a barrel in your favorite color?

X-Caliber Logo Decal

"X-Caliber" Vinyl Decal. Cutout Type/Borderless with transfer sheet.

X-Caliber T-Shirt

X-Caliber Barrel & Manufacturing T-Shirt. Black. 100% Cotton. See below for sizing options and availability.
From $30.00